diff --git a/00-before-we-start.html b/00-before-we-start.html
index 01a375b95..393869c0f 100644
--- a/00-before-we-start.html
+++ b/00-before-we-start.html
@@ -664,7 +664,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/00-before-we-start.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-06-05",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/01-short-introduction-to-Python.html b/01-short-introduction-to-Python.html
index e927cc246..c2bf9eb9b 100644
--- a/01-short-introduction-to-Python.html
+++ b/01-short-introduction-to-Python.html
@@ -718,7 +718,7 @@ <h3 class="callout-title">Tuples<em>vs.</em>Lists<a class="anchor" aria-label="a
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>What happens when you execute <code>a_list[1] = 5</code>?</li>
 </ol><p>The second value in <code>a_list</code> is replaced with
@@ -880,7 +880,7 @@ <h3 class="callout-title">Changing dictionaries<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 </li></ol><div class="codewrapper sourceCode" id="cb67">
@@ -1011,7 +1011,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/01-short-introduction-to-Python.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-06-13",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/02-starting-with-data.html b/02-starting-with-data.html
index ea0f0e914..89e92f889 100644
--- a/02-starting-with-data.html
+++ b/02-starting-with-data.html
@@ -695,7 +695,7 @@ <h3 class="callout-title">Challenge - DataFrames<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 <code>surveys_df.columns</code> provides the names of the columns in
@@ -782,7 +782,7 @@ <h3 class="callout-title">Challenge - Statistics<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><code>site_names = pd.unique(surveys_df["plot_id"])</code></li>
 </ol><ul><li>How many unique sites are in the data? <code>site_names.size</code>
@@ -906,7 +906,7 @@ <h3 class="callout-title">Challenge - Summary Data<a class="anchor" aria-label="
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>The first column of output from <code>grouped_data.describe()</code>
 (count) tells us that the data contains 15690 records for female
@@ -1005,7 +1005,7 @@ <h3 class="callout-title">Challenge - Make a list<a class="anchor" aria-label="a
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>As well as calling <code>count()</code> on the <code>record_id</code>
 column of the grouped DataFrame as above, an equivalent result can be
@@ -1128,7 +1128,7 @@ <h3 class="callout-title">Challenge - Plots<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><code>surveys_df.groupby('plot_id').mean()["weight"].plot(kind='bar')</code></li>
 </ol><figure><img src="fig/01_chall_bar_meanweight.png" alt="average weight across all species for each plot" class="figure mx-auto d-block"></figure><ol start="2" style="list-style-type: decimal"><li><code>surveys_df.groupby('sex').count()["record_id"].plot(kind='bar')</code></li>
@@ -1190,7 +1190,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Solution to Summary Challenge</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>First we group data by site and by sex, and then calculate a total
 for each site.</p>
@@ -1335,7 +1335,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/02-starting-with-data.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-29",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/03-index-slice-subset.html b/03-index-slice-subset.html
index 051aa347e..23c5a5bd3 100644
--- a/03-index-slice-subset.html
+++ b/03-index-slice-subset.html
@@ -1247,7 +1247,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/03-index-slice-subset.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-08-18",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/04-data-types-and-format.html b/04-data-types-and-format.html
index 864bbb018..abcf30228 100644
--- a/04-data-types-and-format.html
+++ b/04-data-types-and-format.html
@@ -937,7 +937,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/04-data-types-and-format.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-06-05",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/05-merging-data.html b/05-merging-data.html
index 52ba8e174..d0ea09ff7 100644
--- a/05-merging-data.html
+++ b/05-merging-data.html
@@ -494,7 +494,7 @@ <h3 class="callout-title">Challenge - Combine Data<a class="anchor" aria-label="
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb9">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -831,7 +831,7 @@ <h3 class="callout-title">Challenge - Distributions<a class="anchor" aria-label=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb25">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -894,7 +894,7 @@ <h3 class="callout-title">Challenge - Diversity Index<a class="anchor" aria-labe
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><div class="codewrapper sourceCode" id="cb31">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1008,7 +1008,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/05-merging-data.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-19",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/06-loops-and-functions.html b/06-loops-and-functions.html
index 366f6c077..1483f1587 100644
--- a/06-loops-and-functions.html
+++ b/06-loops-and-functions.html
@@ -435,7 +435,7 @@ <h3 class="callout-title">Challenge - Loops<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 <div class="codewrapper sourceCode" id="cb9">
@@ -691,7 +691,7 @@ <h3 class="callout-title">Challenge - Modifying loops<a class="anchor" aria-labe
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><div class="codewrapper sourceCode" id="cb27">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -813,7 +813,7 @@ <h3 class="callout-title">Challenge - Functions<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 <p>For example, using an integer and a string:</p>
@@ -1078,7 +1078,7 @@ <h3 class="callout-title">Challenge: More functions<a class="anchor" aria-label=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><div class="codewrapper sourceCode" id="cb55">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1272,7 +1272,7 @@ <h3 class="callout-title">Challenge - Variables<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 <div class="codewrapper sourceCode" id="cb62">
@@ -1483,7 +1483,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><div class="codewrapper sourceCode" id="cb75">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1701,7 +1701,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/06-loops-and-functions.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-18",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/07-visualization-ggplot-python.html b/07-visualization-ggplot-python.html
index 2fb819e96..f0dfbe3e4 100644
--- a/07-visualization-ggplot-python.html
+++ b/07-visualization-ggplot-python.html
@@ -475,7 +475,7 @@ <h3 class="callout-title">Challenge - bar chart<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Answers</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb8">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -606,7 +606,7 @@ <h3 class="callout-title">Challenge - Bar plot adaptations<a class="anchor" aria
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Answers</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb16">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -685,7 +685,7 @@ <h3 class="callout-title">Challenge - distributions<a class="anchor" aria-label=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Answers</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb19">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -833,7 +833,7 @@ <h3 class="callout-title">Challenge - facetting<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Answers</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb28">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -868,7 +868,7 @@ <h3 class="callout-title">Challenge - facetting<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Answers</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb29">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1042,7 +1042,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/07-visualization-ggplot-python.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-19",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/08-putting-it-all-together.html b/08-putting-it-all-together.html
index 2cdf989f7..978d779bf 100644
--- a/08-putting-it-all-together.html
+++ b/08-putting-it-all-together.html
@@ -299,7 +299,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data Ingest and Visualization - Matplotlib and Pandas</h1>
-        <p>Last updated on 2023-05-08 |
+        <p>Last updated on 2024-01-31 |
         
         <a href="https://github.com/datacarpentry/python-ecology-lesson/edit/main/episodes/08-putting-it-all-together.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -473,7 +473,7 @@ <h3 class="callout-title">Tip<a class="anchor" aria-label="anchor" href="#tip-1"
 </div>
 <p>We will cover a few basic commands for creating and formatting plots
 with matplotlib in this lesson. A great resource for help creating and
-styling your figures is the matplotlib gallery (<a href="https://matplotlib.org/gallery.html" class="external-link">http://matplotlib.org/gallery.html</a>),
+styling your figures is the matplotlib gallery (<a href="https://matplotlib.org/stable/gallery/" class="external-link">matplot gallery</a>),
 which includes plots in many different styles and the source codes that
 create them.</p>
 <div class="section level3">
@@ -627,7 +627,7 @@ <h3 class="callout-title">Challenge - Pandas and matplotlib<a class="anchor" ari
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Answers</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb13">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -705,7 +705,7 @@ <h3 class="callout-title">Challenge - Saving figure to file<a class="anchor" ari
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   <h4 class="accordion-header" id="headingSolution2">Answers</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
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@@ -721,7 +721,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 </h2>
 <hr class="half-width"><p>Matplotlib can make many other types of plots in much the same way
 that it makes two-dimensional line plots. Look through the examples in
-<a href="https://matplotlib.org/users/screenshots.html" class="external-link">http://matplotlib.org/users/screenshots.html</a>
+<a href="https://matplotlib.org/stable/plot_types/" class="external-link">https://matplotlib.org/stable/plot_types/</a>
 and try a few of them (click on the “Source code” link and copy and
 paste into a new cell in Jupyter Notebook or save as a text file with a
 <code>.py</code> extension and run in the command line).</p>
@@ -816,8 +816,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/08-putting-it-all-together.html",
   "dateCreated": "2015-03-19",
-  "dateModified": "2023-05-08",
-  "datePublished": "2024-01-30"
+  "dateModified": "2024-01-31",
+  "datePublished": "2024-01-31"
 }
 
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diff --git a/09-working-with-sql.html b/09-working-with-sql.html
index a56ce323b..d4e7e7958 100644
--- a/09-working-with-sql.html
+++ b/09-working-with-sql.html
@@ -697,7 +697,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/09-working-with-sql.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-18",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/404.html b/404.html
index 22e444a98..7cebe97a4 100644
--- a/404.html
+++ b/404.html
@@ -354,8 +354,8 @@ <h1>Page not found</h1>
   "url": "https://datacarpentry.github.io/python-ecology-lesson/404.html",
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/404.html",
   "dateCreated": "2015-03-19",
-  "dateModified": "2024-01-30",
-  "datePublished": "2024-01-30"
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 }
 
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diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index eff76434c..6c7663796 100644
--- a/CODE_OF_CONDUCT.html
+++ b/CODE_OF_CONDUCT.html
@@ -364,7 +364,7 @@ <h1>Contributor Code of Conduct</h1>
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/CODE_OF_CONDUCT.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/CONTRIBUTORS.html b/CONTRIBUTORS.html
index 780467457..5e1818ba4 100644
--- a/CONTRIBUTORS.html
+++ b/CONTRIBUTORS.html
@@ -399,7 +399,7 @@ <h1>About Contributors</h1>
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/LICENSE.html b/LICENSE.html
index bae331482..f9fcc7723 100644
--- a/LICENSE.html
+++ b/LICENSE.html
@@ -415,7 +415,7 @@ <h1>Licenses</h1>
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/LICENSE.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/aio.html b/aio.html
index 071c56e4f..dbfdd235c 100644
--- a/aio.html
+++ b/aio.html
@@ -1112,7 +1112,7 @@ <h3 class="callout-title">Tuples<em>vs.</em>Lists<a class="anchor" aria-label="a
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>What happens when you execute <code>a_list[1] = 5</code>?</li>
@@ -1285,7 +1285,7 @@ <h3 class="callout-title">Changing dictionaries<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
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 </button>
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 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 </li></ol>
@@ -1798,7 +1798,7 @@ <h3 class="callout-title">Challenge - DataFrames<a class="anchor" aria-label="an
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <ol style="list-style-type: decimal">
 <li><code>site_names = pd.unique(surveys_df["plot_id"])</code></li>
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-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
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 <ol style="list-style-type: decimal">
 <li>The first column of output from <code>grouped_data.describe()</code>
@@ -2135,7 +2135,7 @@ <h3 class="callout-title">Challenge - Make a list<a class="anchor" aria-label="a
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 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>As well as calling <code>count()</code> on the <code>record_id</code>
 column of the grouped DataFrame as above, an equivalent result can be
@@ -2262,7 +2262,7 @@ <h3 class="callout-title">Challenge - Plots<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
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 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li><code>surveys_df.groupby('plot_id').mean()["weight"].plot(kind='bar')</code></li>
@@ -2333,7 +2333,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
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 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>First we group data by site and by sex, and then calculate a total
 for each site.</p>
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 </button>
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@@ -6733,7 +6733,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-08-putting-it-all-together"><p>Content from <a href="08-putting-it-all-together.html">Data Ingest and Visualization - Matplotlib and Pandas</a></p>
 <hr>
-<p>Last updated on 2023-05-08 |
+<p>Last updated on 2024-01-31 |
         
         <a href="https://github.com/datacarpentry/python-ecology-lesson/edit/main/episodes/08-putting-it-all-together.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
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@@ -6909,7 +6909,7 @@ <h3 class="callout-title">Tip<a class="anchor" aria-label="anchor" href="#tip-1"
 </div>
 <p>We will cover a few basic commands for creating and formatting plots
 with matplotlib in this lesson. A great resource for help creating and
-styling your figures is the matplotlib gallery (<a href="https://matplotlib.org/gallery.html" class="external-link">http://matplotlib.org/gallery.html</a>),
+styling your figures is the matplotlib gallery (<a href="https://matplotlib.org/stable/gallery/" class="external-link">matplot gallery</a>),
 which includes plots in many different styles and the source codes that
 create them.</p>
 <div class="section level3">
@@ -7065,7 +7065,7 @@ <h3 class="callout-title">Challenge - Pandas and matplotlib<a class="anchor" ari
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb13">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -7145,7 +7145,7 @@ <h3 class="callout-title">Challenge - Saving figure to file<a class="anchor" ari
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Answers</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb15">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -7162,7 +7162,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <hr class="half-width">
 <p>Matplotlib can make many other types of plots in much the same way
 that it makes two-dimensional line plots. Look through the examples in
-<a href="https://matplotlib.org/users/screenshots.html" class="external-link">http://matplotlib.org/users/screenshots.html</a>
+<a href="https://matplotlib.org/stable/plot_types/" class="external-link">https://matplotlib.org/stable/plot_types/</a>
 and try a few of them (click on the “Source code” link and copy and
 paste into a new cell in Jupyter Notebook or save as a text file with a
 <code>.py</code> extension and run in the command line).</p>
@@ -7605,8 +7605,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/aio.html",
   "dateCreated": "2015-03-19",
-  "dateModified": "2024-01-30",
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+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/discuss.html b/discuss.html
index e22dd8d26..b2ff95178 100644
--- a/discuss.html
+++ b/discuss.html
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-30"
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 }
 
   </script><script>
diff --git a/extra_challenges.html b/extra_challenges.html
index 7ae25ed81..f5f460316 100644
--- a/extra_challenges.html
+++ b/extra_challenges.html
@@ -334,7 +334,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p><code>surveys_df[::-1]</code> provides every row of the DataFrame, in
 reverse order.</p>
@@ -385,7 +385,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
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   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>We get the expected files for all years between 1977 and 2002, plus
 an empty <code>data/surveys1976.csv</code> file with only the
@@ -453,7 +453,7 @@ <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-18",
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   </script><script>
diff --git a/images.html b/images.html
index 3551119ab..120aab650 100644
--- a/images.html
+++ b/images.html
@@ -525,8 +525,8 @@ <h3 id="08-putting-it-all-together-figure-6">Figure 6</h3>
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   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/images.html",
   "dateCreated": "2015-03-19",
-  "dateModified": "2024-01-30",
-  "datePublished": "2024-01-30"
+  "dateModified": "2024-01-31",
+  "datePublished": "2024-01-31"
 }
 
   </script><script>
diff --git a/index.html b/index.html
index 84b4fd755..e24bf11e5 100644
--- a/index.html
+++ b/index.html
@@ -398,7 +398,7 @@ <h3 class="callout-title">Installing Anaconda<a class="anchor" aria-label="ancho
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><p>Open <a href="https://www.anaconda.com/products/individual" class="external-link">https://www.anaconda.com/products/individual</a>
 in your web browser.</p></li>
@@ -434,7 +434,7 @@ <h4 id="video-tutorial">Video Tutorial<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">MacOS</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><p>Visit <a href="https://www.anaconda.com/products/individual" class="external-link">https://www.anaconda.com/products/individual</a>
 in your web browser.</p></li>
@@ -473,7 +473,7 @@ <h4 id="video-tutorial-1">Video Tutorial<a class="anchor" aria-label="anchor" hr
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Linux</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>Note that the following installation steps require you to work from
 the terminal (shell). If you run into any difficulties, please request
@@ -631,8 +631,8 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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diff --git a/instructor-notes.html b/instructor-notes.html
index 15c0da015..a6d5c7c83 100644
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-  "dateModified": "2024-01-30",
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diff --git a/instructor/00-before-we-start.html b/instructor/00-before-we-start.html
index 484effe81..808f82f1e 100644
--- a/instructor/00-before-we-start.html
+++ b/instructor/00-before-we-start.html
@@ -666,7 +666,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-06-05",
-  "datePublished": "2024-01-30"
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diff --git a/instructor/01-short-introduction-to-Python.html b/instructor/01-short-introduction-to-Python.html
index 95d0e4c0a..c419b9cd8 100644
--- a/instructor/01-short-introduction-to-Python.html
+++ b/instructor/01-short-introduction-to-Python.html
@@ -720,7 +720,7 @@ <h3 class="callout-title">Tuples<em>vs.</em>Lists<a class="anchor" aria-label="a
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>What happens when you execute <code>a_list[1] = 5</code>?</li>
 </ol><p>The second value in <code>a_list</code> is replaced with
@@ -882,7 +882,7 @@ <h3 class="callout-title">Changing dictionaries<a class="anchor" aria-label="anc
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-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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@@ -917,7 +917,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
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-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <p>It can help to further demonstrate the freedom the user has to define
 values to keys in a dictionary, by showing another example with a value
@@ -1038,7 +1038,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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diff --git a/instructor/02-starting-with-data.html b/instructor/02-starting-with-data.html
index ac83dd8a8..f662b0fe2 100644
--- a/instructor/02-starting-with-data.html
+++ b/instructor/02-starting-with-data.html
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-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 <code>surveys_df.columns</code> provides the names of the columns in
@@ -725,7 +725,7 @@ <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Recapping object (im)mutability</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>Working through solutions to the challenge above can provide a good
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-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><code>site_names = pd.unique(surveys_df["plot_id"])</code></li>
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@@ -859,7 +859,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor2">
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 <div class="accordion-body">
 <p>In pandas prior to version 0.18.1 there is a bug causing
 <code>surveys_df['weight'].describe()</code> to return a runtime
@@ -945,7 +945,7 @@ <h3 class="callout-title">Challenge - Summary Data<a class="anchor" aria-label="
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 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>The first column of output from <code>grouped_data.describe()</code>
 (count) tells us that the data contains 15690 records for female
@@ -1044,7 +1044,7 @@ <h3 class="callout-title">Challenge - Make a list<a class="anchor" aria-label="a
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 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>As well as calling <code>count()</code> on the <code>record_id</code>
 column of the grouped DataFrame as above, an equivalent result can be
@@ -1167,7 +1167,7 @@ <h3 class="callout-title">Challenge - Plots<a class="anchor" aria-label="anchor"
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-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><code>surveys_df.groupby('plot_id').mean()["weight"].plot(kind='bar')</code></li>
 </ol><figure><img src="../fig/01_chall_bar_meanweight.png" alt="average weight across all species for each plot" class="figure mx-auto d-block"></figure><ol start="2" style="list-style-type: decimal"><li><code>surveys_df.groupby('sex').count()["record_id"].plot(kind='bar')</code></li>
@@ -1229,7 +1229,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
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-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>First we group data by site and by sex, and then calculate a total
 for each site.</p>
@@ -1374,7 +1374,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-29",
-  "datePublished": "2024-01-30"
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diff --git a/instructor/03-index-slice-subset.html b/instructor/03-index-slice-subset.html
index d015615d3..6fa5b5aa9 100644
--- a/instructor/03-index-slice-subset.html
+++ b/instructor/03-index-slice-subset.html
@@ -1311,7 +1311,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-08-18",
-  "datePublished": "2024-01-30"
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diff --git a/instructor/04-data-types-and-format.html b/instructor/04-data-types-and-format.html
index 2803916cc..9e9280219 100644
--- a/instructor/04-data-types-and-format.html
+++ b/instructor/04-data-types-and-format.html
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-06-05",
-  "datePublished": "2024-01-30"
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diff --git a/instructor/05-merging-data.html b/instructor/05-merging-data.html
index fb712f5c6..1dae4176e 100644
--- a/instructor/05-merging-data.html
+++ b/instructor/05-merging-data.html
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-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <p>The number of individuals for each taxa in each plot per sex can be
 derived as well.</p>
@@ -937,7 +937,7 @@ <h3 class="callout-title">Challenge - Diversity Index<a class="anchor" aria-labe
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
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 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
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 <ol style="list-style-type: decimal"><li><div class="codewrapper sourceCode" id="cb31">
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@@ -1051,7 +1051,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-19",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
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diff --git a/instructor/06-loops-and-functions.html b/instructor/06-loops-and-functions.html
index cbc40b928..d778b7c0d 100644
--- a/instructor/06-loops-and-functions.html
+++ b/instructor/06-loops-and-functions.html
@@ -437,7 +437,7 @@ <h3 class="callout-title">Challenge - Loops<a class="anchor" aria-label="anchor"
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   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 <ol style="list-style-type: decimal"><li>
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@@ -693,7 +693,7 @@ <h3 class="callout-title">Challenge - Modifying loops<a class="anchor" aria-labe
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 <div class="accordion-body">
 <p>When teaching the challenge below, demonstrating the results in a
 debugging environment can make function scope more clear.</p>
@@ -828,7 +828,7 @@ <h3 class="callout-title">Challenge - Functions<a class="anchor" aria-label="anc
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 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 <p>For example, using an integer and a string:</p>
@@ -1093,7 +1093,7 @@ <h3 class="callout-title">Challenge: More functions<a class="anchor" aria-label=
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-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
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 <ol style="list-style-type: decimal"><li><div class="codewrapper sourceCode" id="cb55">
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@@ -1287,7 +1287,7 @@ <h3 class="callout-title">Challenge - Variables<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
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 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
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 <ol style="list-style-type: decimal"><li>
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@@ -1498,7 +1498,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
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@@ -1716,7 +1716,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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-  "datePublished": "2024-01-30"
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diff --git a/instructor/07-visualization-ggplot-python.html b/instructor/07-visualization-ggplot-python.html
index 6f321b28e..f6045df66 100644
--- a/instructor/07-visualization-ggplot-python.html
+++ b/instructor/07-visualization-ggplot-python.html
@@ -398,7 +398,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
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+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <p>If learners have trouble generating the output, or anything happens
 with that, the folder <a href="https://github.com/datacarpentry/python-ecology-lesson/tree/main/sample_output" class="external-link"><code>sample_output</code></a>
@@ -432,7 +432,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
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-<div id="collapseInstructor2" class="accordion-collapse collapse" aria-labelledby="headingInstructor2" data-bs-parent="#accordionInstructor2">
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 <div class="accordion-body">
 <p>Note <code>plotnine</code> contains a <em>lot</em> of deprecation
 warnings in some versions of python/matplotlib, warnings may need to be
@@ -512,7 +512,7 @@ <h3 class="callout-title">Challenge - bar chart<a class="anchor" aria-label="anc
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@@ -1079,7 +1079,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-19",
-  "datePublished": "2024-01-30"
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diff --git a/instructor/08-putting-it-all-together.html b/instructor/08-putting-it-all-together.html
index ea15df78c..7d6603c38 100644
--- a/instructor/08-putting-it-all-together.html
+++ b/instructor/08-putting-it-all-together.html
@@ -299,7 +299,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data Ingest and Visualization - Matplotlib and Pandas</h1>
-        <p>Last updated on 2023-05-08 |
+        <p>Last updated on 2024-01-31 |
         
         <a href="https://github.com/datacarpentry/python-ecology-lesson/edit/main/episodes/08-putting-it-all-together.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -475,7 +475,7 @@ <h3 class="callout-title">Tip<a class="anchor" aria-label="anchor" href="#tip-1"
 </div>
 <p>We will cover a few basic commands for creating and formatting plots
 with matplotlib in this lesson. A great resource for help creating and
-styling your figures is the matplotlib gallery (<a href="https://matplotlib.org/gallery.html" class="external-link">http://matplotlib.org/gallery.html</a>),
+styling your figures is the matplotlib gallery (<a href="https://matplotlib.org/stable/gallery/" class="external-link">matplot gallery</a>),
 which includes plots in many different styles and the source codes that
 create them.</p>
 <div class="section level3">
@@ -629,7 +629,7 @@ <h3 class="callout-title">Challenge - Pandas and matplotlib<a class="anchor" ari
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <hr class="half-width"><p>Matplotlib can make many other types of plots in much the same way
 that it makes two-dimensional line plots. Look through the examples in
-<a href="https://matplotlib.org/users/screenshots.html" class="external-link">http://matplotlib.org/users/screenshots.html</a>
+<a href="https://matplotlib.org/stable/plot_types/" class="external-link">https://matplotlib.org/stable/plot_types/</a>
 and try a few of them (click on the “Source code” link and copy and
 paste into a new cell in Jupyter Notebook or save as a text file with a
 <code>.py</code> extension and run in the command line).</p>
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   "dateCreated": "2015-03-19",
-  "dateModified": "2023-05-08",
-  "datePublished": "2024-01-30"
+  "dateModified": "2024-01-31",
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-18",
-  "datePublished": "2024-01-30"
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diff --git a/instructor/404.html b/instructor/404.html
index 1aaf40c21..fe39bb8fc 100644
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-  "dateModified": "2024-01-30",
-  "datePublished": "2024-01-30"
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diff --git a/instructor/CODE_OF_CONDUCT.html b/instructor/CODE_OF_CONDUCT.html
index f86d7bc4e..d1c22206c 100644
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+++ b/instructor/CODE_OF_CONDUCT.html
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
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diff --git a/instructor/CONTRIBUTORS.html b/instructor/CONTRIBUTORS.html
index 8c0d849d8..ffc2f6819 100644
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+++ b/instructor/CONTRIBUTORS.html
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
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   </script><script>
diff --git a/instructor/LICENSE.html b/instructor/LICENSE.html
index 7be27907a..cf4da6d40 100644
--- a/instructor/LICENSE.html
+++ b/instructor/LICENSE.html
@@ -417,7 +417,7 @@ <h1>Licenses</h1>
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-30"
+  "datePublished": "2024-01-31"
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diff --git a/instructor/aio.html b/instructor/aio.html
index 9064d8713..2e510927e 100644
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@@ -1120,7 +1120,7 @@ <h3 class="callout-title">Tuples<em>vs.</em>Lists<a class="anchor" aria-label="a
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-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>What happens when you execute <code>a_list[1] = 5</code>?</li>
@@ -1293,7 +1293,7 @@ <h3 class="callout-title">Changing dictionaries<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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 <div class="accordion-body">
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   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Assigning to Dictionaries</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <p>It can help to further demonstrate the freedom the user has to define
 values to keys in a dictionary, by showing another example with a value
@@ -1832,7 +1832,7 @@ <h3 class="callout-title">Challenge - DataFrames<a class="anchor" aria-label="an
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   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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 <li>
@@ -1862,7 +1862,7 @@ <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
   <h3 class="accordion-header" id="headingInstructor1">
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 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>Working through solutions to the challenge above can provide a good
 opportunity to recap about mutability and immutability of different
@@ -1947,7 +1947,7 @@ <h3 class="callout-title">Challenge - Statistics<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li><code>site_names = pd.unique(surveys_df["plot_id"])</code></li>
@@ -2006,7 +2006,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor2">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Important Bug Note</h3>
 </button>
-<div id="collapseInstructor2" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor2" aria-labelledby="headingInstructor2">
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 <p>In pandas prior to version 0.18.1 there is a bug causing
 <code>surveys_df['weight'].describe()</code> to return a runtime
@@ -2098,7 +2098,7 @@ <h3 class="callout-title">Challenge - Summary Data<a class="anchor" aria-label="
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
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 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
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 <ol style="list-style-type: decimal">
 <li>The first column of output from <code>grouped_data.describe()</code>
@@ -2206,7 +2206,7 @@ <h3 class="callout-title">Challenge - Make a list<a class="anchor" aria-label="a
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 </button>
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 <div class="accordion-body">
 <p>As well as calling <code>count()</code> on the <code>record_id</code>
 column of the grouped DataFrame as above, an equivalent result can be
@@ -2333,7 +2333,7 @@ <h3 class="callout-title">Challenge - Plots<a class="anchor" aria-label="anchor"
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 </button>
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 <li><code>surveys_df.groupby('plot_id').mean()["weight"].plot(kind='bar')</code></li>
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 <div class="accordion-body">
 <p>First we group data by site and by sex, and then calculate a total
 for each site.</p>
@@ -4316,7 +4316,7 @@ <h3 class="callout-title">Challenge - Combine Data<a class="anchor" aria-label="
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 </button>
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   <h3 class="accordion-header" id="headingInstructor1">
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 </button>
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 <div class="accordion-body">
 <p>The number of individuals for each taxa in each plot per sex can be
 derived as well.</p>
@@ -4777,7 +4777,7 @@ <h3 class="callout-title">Challenge - Diversity Index<a class="anchor" aria-labe
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
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 </button>
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 <div class="accordion-body">
 <p>When teaching the challenge below, demonstrating the results in a
 debugging environment can make function scope more clear.</p>
@@ -5381,7 +5381,7 @@ <h3 class="callout-title">Challenge - Functions<a class="anchor" aria-label="anc
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 <li>
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 </button>
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+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <p>If learners have trouble generating the output, or anything happens
 with that, the folder <a href="https://github.com/datacarpentry/python-ecology-lesson/tree/main/sample_output" class="external-link"><code>sample_output</code></a>
@@ -6361,7 +6361,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
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 <div class="accordion-body">
 <p>Note <code>plotnine</code> contains a <em>lot</em> of deprecation
 warnings in some versions of python/matplotlib, warnings may need to be
@@ -6445,7 +6445,7 @@ <h3 class="callout-title">Challenge - bar chart<a class="anchor" aria-label="anc
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@@ -6976,7 +6976,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-08-putting-it-all-together"><p>Content from <a href="08-putting-it-all-together.html">Data Ingest and Visualization - Matplotlib and Pandas</a></p>
 <hr>
-<p>Last updated on 2023-05-08 |
+<p>Last updated on 2024-01-31 |
         
         <a href="https://github.com/datacarpentry/python-ecology-lesson/edit/main/episodes/08-putting-it-all-together.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 105 minutes</p>
@@ -7153,7 +7153,7 @@ <h3 class="callout-title">Tip<a class="anchor" aria-label="anchor" href="#tip-1"
 </div>
 <p>We will cover a few basic commands for creating and formatting plots
 with matplotlib in this lesson. A great resource for help creating and
-styling your figures is the matplotlib gallery (<a href="https://matplotlib.org/gallery.html" class="external-link">http://matplotlib.org/gallery.html</a>),
+styling your figures is the matplotlib gallery (<a href="https://matplotlib.org/stable/gallery/" class="external-link">matplot gallery</a>),
 which includes plots in many different styles and the source codes that
 create them.</p>
 <div class="section level3">
@@ -7309,7 +7309,7 @@ <h3 class="callout-title">Challenge - Pandas and matplotlib<a class="anchor" ari
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 <hr class="half-width">
 <p>Matplotlib can make many other types of plots in much the same way
 that it makes two-dimensional line plots. Look through the examples in
-<a href="https://matplotlib.org/users/screenshots.html" class="external-link">http://matplotlib.org/users/screenshots.html</a>
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diff --git a/instructor/index.html b/instructor/index.html
index 3cf38f5fe..a4075b77f 100644
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 <p>Note that the following installation steps require you to work from
 the terminal (shell). If you run into any difficulties, please request
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