[3.6] bpo-29822: make inspect.isabstract() work during __init_subclass__#1979
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[3.6] bpo-29822: make inspect.isabstract() work during __init_subclass__#1979
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June 6, 2017 17:16
…s__. (pythonGH-678) At the time when an abstract base class' __init_subclass__ runs, ABCMeta.__new__ has not yet finished running, so in the presence of __init_subclass__, inspect.isabstract() can no longer depend only on TPFLAGS_IS_ABSTRACT.. (cherry picked from commit fcfe80e)
This PR was generated by cherry_picker.py. There was a merge conflict in Misc/NEWS that I thought I resolved correctly, but the diff of this branch with master shows that the news item is new-to-this-PR. I'm not sure what's going on, but this commit removes the news item. I'd appreciate a second pair of eyes making sure that I'm doing things right.
The cherry-pick apparently introduced a duplicate item in Misc/NEWS, not sure exactly how. The previous commit removed one copy, but I accidentally removed the spurious copy. I *think* this commit will set things right.
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This is a backport of #678 to python 3.6. It depends on #527, which was only recently backported (#1282), and I might have made this backport too soon, in which case I apologized.
Also, I'm not entirely sure that I used the cherry picker tool correctly, because (e.g) a new news item snuck into Misc/NEWS when the backport was generated; I'll clean that up shortly, but I recommend having someone double-check that I'm doing this right :-)