René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: rcParams['legend.loc'] can't use float-tuple like kwarg legend(loc...)","articleBody":"### Bug summary\n\nWe can now use a (x,y) argument for `plt.legend(loc=(x,y))`,\r\nbut using the tuple as a value for rcParams['legend.loc'] fails. \r\n\r\n\n\n### Code for reproduction\n\n```python\nimport matplotlib.pyplot as plt\r\nimport matplotlib as mpl\r\nxs, ys = [1,2,3], [2,3,1]\r\n\r\nfig, ax = plt.subplots(3)\r\n\r\nax[0].scatter(xs, ys, label='loc-tuple-arg')\r\nax[0].legend(loc=(1.1, .5)) # works\r\n\r\nax[1].scatter(xs, ys, label='loc-rcparam-tuple')\r\nmpl.rcParams['legend.loc'] = (0.9, .7)\r\nax[1].legend() # fails w/o documentation\r\n\r\nax[2].scatter(xs, ys, label='loc-rcparam-str(tuple)')\r\nmpl.rcParams['legend.loc'] = '(.8, .3)'\r\nax[2].legend() # fails with documentation\n```\n\n\n### Actual outcome\n\nSetting rcParams['legend.loc'] to a tuple fails with \r\n\r\n\u003e AttributeError: 'tuple' object has no attribute 'lower'\r\n\r\nsetting rcParams['legend.loc'] to the string representation of a tuple fails with a list of supported values. \n\n### Expected outcome\n\nIdeally  rcParams['legend.loc']  would apply a tuple the same way the kwarg does. \r\n\r\nSecond best would be a bit more documentation; 1) reporting the list of supported strings for any un-interpretable value, and 2) mentioning in the default matplotlibrc  that only a set of strings are supported. \n\n### Additional information\n\nI believe the  `loc` kwarg originally only took string values, but that seems to have been at least a major version ago. \n\n### Operating system\n\nUbuntu\n\n### Matplotlib Version\n\n3.3.4\n\n### Matplotlib Backend\n\nTkAgg\n\n### Python version\n\nPython 3.9.7\n\n### Jupyter version\n\n_No response_\n\n### Installation\n\npip","author":{"url":"https://github.com/cphlewis","@type":"Person","name":"cphlewis"},"datePublished":"2022-01-27T23:09:06.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/22338/matplotlib/issues/22338"}