[issue12844] Support more than 255 arguments

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

No longer changes to Python/compile.c are needed. Here is a patch against 3.7 that just removes the limit of the number of passed arguments in Python/ast.c and adds tests.

But still there is a limitation on the number of function parameters. It is caused by using a bytes objects as co_cell2arg.

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stage:  -> patch review
versions: +Python 3.7
Added file: http://bugs.python.org/file45638/no-args-limit.patch

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