[New-bugs-announce] [issue43823] Improve syntax errors for invalid dictionary literals

[Pablo Galindo Salgado]

New submission from Pablo Galindo Salgado <pablogsal at gmail.com>:

Currently the error for invalid dict literals is generic:

>>> {1:2, 3:}
  File "<stdin>", line 1
    {1:2, 3:}
            ^
SyntaxError: invalid syntax
>>> {1:2, 3}
  File "<stdin>", line 1
    {1:2, 3}
           ^
SyntaxError: invalid syntax

We can have better errors for these cases, which can help with big dict literals:

>>> {1:2, 3}
  File "<stdin>", line 1
    {1:2, 3}
           ^
SyntaxError: ':' expected after dictionary key
>>> {1:2, 3:}
  File "<stdin>", line 1
    {1:2, 3:}
           ^
SyntaxError: expression expected after dictionary key and ':'

----------
messages: 390917
nosy: pablogsal
priority: normal
severity: normal
status: open
title: Improve syntax errors for invalid dictionary literals

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43823>
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