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Improve syntax errors for invalid dictionary literals #87989

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pablogsal opened this issue Apr 13, 2021 · 3 comments
Closed

Improve syntax errors for invalid dictionary literals #87989

pablogsal opened this issue Apr 13, 2021 · 3 comments

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@pablogsal
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BPO 43823
Nosy @pablogsal
PRs
  • bpo-43823: Improve syntax errors for invalid dictionary literals #25378
  • bpo-43823: Fix location of one of the errors for invalid dictionary literals #25427
    		•

    Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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    GitHub fields:

    assignee = None
closed_at = <Date 2021-04-15.13:07:07.933>
created_at = <Date 2021-04-13.02:05:47.571>
labels = []
title = 'Improve syntax errors for invalid dictionary literals'
updated_at = <Date 2021-04-15.23:45:51.371>
user = 'https://github.com/pablogsal'

    bugs.python.org fields:

    activity = <Date 2021-04-15.23:45:51.371>
actor = 'pablogsal'
assignee = 'none'
closed = True
closed_date = <Date 2021-04-15.13:07:07.933>
closer = 'pablogsal'
components = []
creation = <Date 2021-04-13.02:05:47.571>
creator = 'pablogsal'
dependencies = []
files = []
hgrepos = []
issue_num = 43823
keywords = ['patch']
message_count = 3.0
messages = ['390917', '391135', '391155']
nosy_count = 1.0
nosy_names = ['pablogsal']
pr_nums = ['25378', '25427']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue43823'
versions = []
    @pablogsal
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    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 ':'

    @pablogsal
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    New changeset da74350 by Pablo Galindo in branch 'master':
    bpo-43823: Improve syntax errors for invalid dictionary literals (GH-25378)
    da74350

    @pablogsal
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    New changeset b5b98bd by Pablo Galindo in branch 'master':
    bpo-43823: Fix location of one of the errors for invalid dictionary literals (GH-25427)
    b5b98bd

    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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