Update fastparse for 3.9 AST changes · Issue #8627 · python/mypy · GitHub
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Update fastparse for 3.9 AST changes #8627

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#8716
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Update fastparse for 3.9 AST changes#8627
#8716
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priority-0-hightopic-parser

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@msullivan
msullivan
opened on Apr 3, 2020

In 3.9.0a5, some changes landed to the AST for subscripting (python/cpython#9605). We need to support them.

This first got reported in #8614 as "syntax error in type comment", which is pretty bad, also! We should clean up that error message when we fix this.

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