Message 367067 - Python tracker

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> bpo-40334: Rename PyConfig.use_peg to _use_peg_parser (GH-19670)

This change removes sys.flags.use_peg which was only used in tests. If someone sees a good reason, we may add it back. In the meanwhile, test.support.use_old_parser() can be used.

I didn't like the idea of having a new sys.flags.use_peg flag appears in 3.9 but disappears in 3.10.

FYI sys.flags still supports the tuple API! Example:

>>> sys.flags[9]
0

I have no idea what is this 10th member of sys.flags :-)