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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: Typo in method name: contains_branch_separately","articleBody":"### Bug summary\n\nThere is a typo in the method name `contains_branch_seperately` from `lib/matplotlib/transforms.py`: https://github.com/matplotlib/matplotlib/blob/a3fcf0b7c4e5270de3865ca97d23751c8a1c5b2d/lib/matplotlib/transforms.py#L1421\n\nThis should be spelled `contains_branch_separately` (`separate` not `seperate`).\n\nSince this is a public API method, I propose:\n1. Rename the method to `contains_branch_separately` (correct spelling)\n2. Create an alias from the old `contains_branch_seperately` spelling to the new method for backwards compatibility\n3. Add a deprecation warning when the old name is used\n4. Update any internal uses and documentation to use the correct spelling\n\nHappy to prepare a PR for this if that makes sense!\n\n### Code for reproduction\n\n```Python\n# Copied from lib/matplotlib/transforms.py\n\n    def contains_branch_seperately(self, other_transform):\n        \"\"\"\n        Return whether the given branch is a sub-tree of this transform on\n        each separate dimension.\n\n        A common use for this method is to identify if a transform is a blended\n        transform containing an Axes' data transform. e.g.::\n\n            x_isdata, y_isdata = trans.contains_branch_seperately(ax.transData)\n\n        \"\"\"\n        if self.output_dims != 2:\n            raise ValueError('contains_branch_seperately only supports '\n                             'transforms with 2 output dimensions')\n        # for a non-blended transform each separate dimension is the same, so\n        # just return the appropriate shape.\n        return (self.contains_branch(other_transform), ) * 2\n```\n\n### Actual outcome\n\nCode runs as expected, but method name contains a typo.\n\n### Expected outcome\n\nMethod name should be correctly spelled as `contains_branch_separately`\n\n### Additional information\n\n_No response_\n\n### Operating system\n\n_No response_\n\n### Matplotlib Version\n\nCurrent `main` branch, as of a3fcf0b (25 August 2025)\n\n### Matplotlib Backend\n\n_No response_\n\n### Python version\n\n_No response_\n\n### Jupyter version\n\n_No response_\n\n### Installation\n\nNone","author":{"url":"https://github.com/brchristian","@type":"Person","name":"brchristian"},"datePublished":"2025-08-26T16:06:43.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/30474/matplotlib/issues/30474"}