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Keep cachedRenderer as None when pickling Figure.#17705
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`Figure.__init__` sets cachedRenderer to None, so it's awkward thatpickling and unpickling a figure completely removes the attribute,causing obscure AttributeErrors.
timhoffm approved these changesJun 21, 2020
meeseeksmachine pushed a commit to meeseeksmachine/matplotlib that referenced this pull requestJun 22, 2020
tacaswell added a commit that referenced this pull requestJun 22, 2020
…705-on-v3.3.xBackport PR#17705 on branch v3.3.x (Keep cachedRenderer as None when pickling Figure.)
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Figure.__init__sets cachedRenderer to None, so it's awkward thatpickling and unpickling a figure completely removes the attribute,
causing obscure AttributeErrors.
Closes#17627. (Well, I can't actually repro the issue as reported -- I suspect it has something to do with interagg, i.e. pycharm -- but this should certainly get rid of the AttributeError.)
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