Lund-Observatory-Teaching / lundpython

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updated old links and old code in notebooks for lesson 3 #55

Closed AlinderS closed 2 years ago

AlinderS commented 2 years ago

Matplotlib has changed their webpage a lot recently. Almost all links were either redirected or pointed to an old, static, version of the docs. All cases were updated to point to the current version. Also, using plt.gca() with any arguments throws a Deprecation warning now. I updated it to the (now) correct plt.axes().