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 It's hard to remember the details of syntax and function calls without using it actively and regularly. Compact "cheat sheets" can be a convenient resource for looking up specific details and capabilities. Here are a set of Python cheat sheets that should be useful.
 
 - General: https://www.pythoncheatsheet.org/
-- General and Matplotlib: https://ehmatthes.github.io/pcc_2e/cheat_sheets/cheat_sheets/
 - Numpy: https://www.datacamp.com/cheat-sheet/numpy-cheat-sheet-data-analysis-in-python
-- Matplotlib and Pandas: https://python-graph-gallery.com/cheat-sheets/
-- Pandas: https://www.datacamp.com/cheat-sheet/pandas-cheat-sheet-for-data-science-in-python
+- Matplotlib: https://matplotlib.org/cheatsheets/
+- Pandas: https://pandas.pydata.org/Pandas_Cheat_Sheet.pdf