[issue44242] enum.IntFlag regression: missing values cause TypeError

[John Belmonte]

John Belmonte <john at neggie.net> added the comment:

> Do you agree that simply removing the unnamed member check that takes place at Flag creation is a good way forward?

It's uncomfortable, because then STRICT is not actually strict, and it's going to be show raw values in str/repr.

> CONFORM -> unnamed bits are discarded (so the DEFAULT flag would be returned)

This behavior of CONFORM is a little dubious.  I expect it to conform new values after the class is constructed.  But the class members themselves should not have that transform applied, and raise an error on invalid bits.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44242>
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