Abhijeet Prasad Bodas f5096f2050 [parser] Flag single unparenthesized generator expr with trailing comma in arguments. (#17893) ...

Fixes #17867

## Summary

The CPython parser does not allow generator expressions which are the
sole arguments in an argument list to have a trailing comma.
With this change, we start flagging such instances.

## Test Plan

Added new inline tests.

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..

err

[parser] Flag single unparenthesized generator expr with trailing comma in arguments. (#17893)

2025-05-07 14:11:35 -04:00

ok

[parser] Flag single unparenthesized generator expr with trailing comma in arguments. (#17893)

2025-05-07 14:11:35 -04:00