[issue44796] Add __parameters__ and __getitem__ in TypeVar and ParamSpec

[Serhiy Storchaka]

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

PR 31143 simplified some code without changing the common API:

 Objects/genericaliasobject.c | 46 ++++++++++++++--------------------------------
 1 file changed, 14 insertions(+), 32 deletions(-)
 Lib/_collections_abc.py | 63 +++++++++------------------------------------------------------
 1 file changed, 9 insertions(+), 54 deletions(-)

PR 27511 will simplify it even more:

 Objects/genericaliasobject.c | 60 ++++++++++++++++++------------------------------------------
 1 file changed, 18 insertions(+), 42 deletions(-)

(Lib/typing.py will be simplified too, even if this does not reduce the number of lines).

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<https://bugs.python.org/issue44796>
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