diff --git a/taskvine/src/bindings/python3/ndcctools/taskvine/dask_executor.py b/taskvine/src/bindings/python3/ndcctools/taskvine/dask_executor.py
index e2fed570a6..89157509d0 100644
--- a/taskvine/src/bindings/python3/ndcctools/taskvine/dask_executor.py
+++ b/taskvine/src/bindings/python3/ndcctools/taskvine/dask_executor.py
@@ -176,8 +176,8 @@ def get(self, dsk, keys, *,
             self.wrapper_proc = wrapper_proc
             self.prune_files = prune_files
             self.category_execution_time = defaultdict(list)
-            self.max_priority = 1e100
-            self.min_priority = -1e100
+            self.max_priority = float('inf')
+            self.min_priority = float('-inf')
 
             if submit_per_cycle is not None and submit_per_cycle < 1:
                 submit_per_cycle = None
@@ -350,8 +350,10 @@ def _enqueue_dask_calls(self, dag, tag, rs, retries, enqueued_calls):
             if self.scheduling_mode == 'random':
                 priority = random.randint(self.min_priority, self.max_priority)
             elif self.scheduling_mode == 'depth-first':
+                # dig more information about different kinds of tasks
                 priority = task_depth
             elif self.scheduling_mode == 'breadth-first':
+                # prefer to start all branches as soon as possible
                 priority = -task_depth
             elif self.scheduling_mode == 'longest-first':
                 # if no tasks have been executed in this category, set a high priority so that we know more information about each category
@@ -360,8 +362,10 @@ def _enqueue_dask_calls(self, dag, tag, rs, retries, enqueued_calls):
                 # if no tasks have been executed in this category, set a high priority so that we know more information about each category
                 priority = -sum(self.category_execution_time[cat]) / len(self.category_execution_time[cat]) if len(self.category_execution_time[cat]) else self.max_priority
             elif self.scheduling_mode == 'FIFO':
+                # first in first out, the default behavior
                 priority = -round(time.time(), 6)
             elif self.scheduling_mode == 'LIFO':
+                # last in first out, the opposite of FIFO
                 priority = round(time.time(), 6)
             elif self.scheduling_mode == 'largest-input-first':
                 # best for saving disk space (with pruing)
@@ -667,6 +671,7 @@ def __init__(self, m,
             self.set_category(category)
         if worker_transfers:
             self.enable_temp_output()
+
         if extra_files:
             for f, name in extra_files.items():
                 self.add_input(f, name)