Remove some references to Py2. #15838
Merged
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The checks in
conf.py
andmatplotlib/__init__.py
are not usefulbecause the files are in fact not Py2-compatible (this has been the case
for
__init__.py
for a while...) due to f-strings/nonlocal, so someonetrying to run the file on Py2 will get a SyntaxError instead of the
error message.
In image.py the cast to int remains necessary even on Py3 because
round(np.float) returns a np.float, not a np.int.
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