[New-bugs-announce] [issue40769] Pegen: cover extra surrounding parentheses for invalid annotated assignment

[Batuhan Taskaya]

New submission from Batuhan Taskaya <isidentical at gmail.com>:

$ python -X oldparser
Python 3.10.0a0 (heads/bpo-xxxxx:f2947e354c, May 21 2020, 18:54:57) 
[GCC 9.2.1 20191008] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> (()): int
  File "<stdin>", line 1
SyntaxError: only single target (not tuple) can be annotated
>>> ((())): int
  File "<stdin>", line 1
SyntaxError: only single target (not tuple) can be annotated
>>> (((()))): int
  File "<stdin>", line 1
SyntaxError: only single target (not tuple) can be annotated
>>> ([]): int
  File "<stdin>", line 1
SyntaxError: only single target (not list) can be annotated
>>> (([])): int
  File "<stdin>", line 1
SyntaxError: only single target (not list) can be annotated

---- current ----

>>> (()): int
  File "<stdin>", line 1
    (()): int
     ^
SyntaxError: illegal target for annotation
>>> (((()))): int
  File "<stdin>", line 1
    (((()))): int
       ^
SyntaxError: illegal target for annotation
>>> ([]): int
  File "<stdin>", line 1
    ([]): int
     ^
SyntaxError: illegal target for annotation
>>> (([])): int
  File "<stdin>", line 1
    (([])): int
      ^
SyntaxError: illegal target for annotation

----------
messages: 369885
nosy: BTaskaya
priority: normal
severity: normal
status: open
title: Pegen: cover extra surrounding parentheses for invalid annotated assignment

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40769>
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