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Negative values in positional access inside formatting #77341

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Negative values in positional access inside formatting#77341
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3.8 (EOL)end of lifetype-featureA feature request or enhancement

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@facundobatista
facundobatista
opened on Mar 27, 2018
BPO 33160
Nosy @facundobatista, @ericvsmith
Superseder
  • bpo-7951: Should str.format allow negative indexes when used for getitem access?
    		•

    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 2018-03-27.21:43:24.292>
created_at = <Date 2018-03-27.21:07:48.690>
labels = ['type-feature', '3.8']
title = 'Negative values in positional access inside formatting'
updated_at = <Date 2018-03-27.21:43:24.291>
user = 'https://github.com/facundobatista'

    bugs.python.org fields:

    activity = <Date 2018-03-27.21:43:24.291>
actor = 'serhiy.storchaka'
assignee = 'none'
closed = True
closed_date = <Date 2018-03-27.21:43:24.292>
closer = 'serhiy.storchaka'
components = []
creation = <Date 2018-03-27.21:07:48.690>
creator = 'facundobatista'
dependencies = []
files = []
hgrepos = []
issue_num = 33160
keywords = []
message_count = 1.0
messages = ['314549']
nosy_count = 2.0
nosy_names = ['facundobatista', 'eric.smith']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '7951'
type = 'enhancement'
url = 'https://bugs.python.org/issue33160'
versions = ['Python 3.8']

    Activity

    1. facundobatista commented on Mar 27, 2018

      @facundobatista
      facundobatista
      on Mar 27, 2018
      MemberAuthor

      This works fine:

      >>> "{[0]}".format([1, 2, 3])
'1'

      This should work too:

      >>> "{[-1]}".format([1, 2, 3])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: list indices must be integers or slices, not str
    2. ned-deily
      added
      3.8 (EOL)end of life
      type-featureA feature request or enhancement
      on Mar 27, 2018
    3. serhiy-storchaka
      closed this as completedon Mar 27, 2018
    4. ezio-melotti
      transferred this issue fromon Apr 10, 2022
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