attempting to reproduce this error nextjournal/clerk#531

.gitignore

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+.cpcache
+venv
+.clerk
+.idea

README.md

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+# Attempt to reproduce issue https://github.com/nextjournal/clerk/issues/531
+
+My reproduction fails with the error `Invalid symbol: Note:.` which I believe is probably identical in respects to the origin of the issue.
+
+To start up the project do the following:
+
+1. Install python3, pip3 and virtualenv
+2. Run `virtualenv venv` to create a virtual environment directory.
+3. Activate the new virtual environment `source venv/bin/activate`
+4. Install matplotlib `pip install matplotlib`
+5. Start up the REPL within the activated virtual environment `clj -m nrepl.cmdline`
+6. Once the browser opens up, enable the last line in `notebooks/issue_reproduction.clj` and see the error appear.

deps.edn

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+{:paths ["dev"]
+ :deps {clj-python/libpython-clj {:mvn/version "2.025"}
+ io.github.nextjournal/clerk {:mvn/version "0.16.1016"}}}

dev/user.clj

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+(require
+ '[nextjournal.clerk :as clerk])
+
+;; start Clerk's built-in webserver on the default port 7777, opening the browser when done
+(clerk/serve! {:browse true :watch-paths ["notebooks"]})
+
+(clerk/show! "notebooks/issue_reproduction.clj")

notebooks/issue_reproduction.clj

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+(ns issue_reproduction
+ (:require [libpython-clj2.require :refer [require-python]]
+ [libpython-clj2.python :refer [py. py.. py.- get-attr call-attr] :as py]))
+
+; have to set the headless mode before requiring pyplot
+(def mplt (py/import-module "matplotlib"))
+(py. mplt "use" "Agg")
+
+(require-python '[matplotlib.pyplot :as pyplot :bind-ns true])
+
+;; Fails with error: Invalid symbol: Note:.
+;; which sounds like https://github.com/nextjournal/clerk/issues/531 -> Invalid symbol: BagObj:
+; (matplotlib.pyplot/imread "images/2024_08_20_room_light.jpg")