René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Accept additional string formatting styles in sankey","articleBody":"Currently, Sankey class accepts number formatting for labels using the old printf string formatting. \r\n\r\nI think the relevant line is here:\r\n\r\nhttps://github.com/matplotlib/matplotlib/blob/a02ffbcd898793c95de66d3bdb4dc0a8b6c5a3d0/lib/matplotlib/sankey.py#L742\r\n\r\nF-strings seem to be preferred over this format (you probably know this already but here's [some reasons](https://realpython.com/python-formatted-output/)). A specific reason is that I can't easily use thousands separator with the old printf format, while this is trivial with f-strings.\r\n\r\nI can rewrite this pretty easily by changing the parameter to format for an f string, [as described here](https://stackoverflow.com/a/54780825).\r\n\r\nCan I put in a pull request thingy? Or is there a particular reason for this old format?","author":{"url":"https://github.com/CharlesHe16","@type":"Person","name":"CharlesHe16"},"datePublished":"2020-12-17T01:08:33.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":26},"url":"https://github.com/19133/matplotlib/issues/19133"}