[issue33475] Fix converting AST expression to string and optimize parenthesis

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:


New changeset b32f8897eafcf335f9e9899c5e622a0b27679437 by Serhiy Storchaka in branch '3.7':
[3.7] bpo-33475: Fix and improve converting annotations to strings. (GH-6774). (GH-6927)
https://github.com/python/cpython/commit/b32f8897eafcf335f9e9899c5e622a0b27679437


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