ENH: add a copy method to colormaps #19663
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timhoffm
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Mar 7, 2021
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While I don't want to put a copy() method on every object, it makes sense here. With this method we make copying simpler and thus promote the needed copying at least for the transition period.
Milestoned for 3.4 - this should have been already introduced with the changes in 3.3. If we don't get it in 3.4 a major purpose ( the easier user-copy workaround in the transition period) is gone.
Co-authored-by: Tim Hoffmann <[email protected]>
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Agreed, that we definitely don't want a copy method on everything. But most classes aren't primarily coming from global instances, and hence usually can be made from scratch. Whereas colormaps are probably 99% coming from the global list, so I think we should make it easy to move into user scope. |
QuLogic
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Mar 9, 2021
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…663-on-v3.4.x Backport PR #19663 on branch v3.4.x (ENH: add a copy method to colormaps)
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PR Summary
Right now we are deprecating access to the global colormaps, but users can only avoid it by doing
newcmap = copy.copy(cmap)which is a bit heavy-handed. Here we provide a simplecopymethod toColormapso we can donewcmap = cmap.copy().See discussion in #19609, #16991, #18503
PR Checklist
pytestpasses).flake8on changed files to check).flake8-docstringsand runflake8 --docstring-convention=all).doc/users/next_whats_new/(follow instructions in README.rst there).doc/api/next_api_changes/(follow instructions in README.rst there).