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Add.isascii() to str, bytes and bytearray #76858

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methane opened this issue Jan 26, 2018 · 4 comments
Closed

Add.isascii() to str, bytes and bytearray #76858

methane opened this issue Jan 26, 2018 · 4 comments
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3.7 interpreter-core type-feature

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@methane
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@methane methane commented Jan 26, 2018

BPO 32677
Nosy @vstinner, @methane
PRs
  • #5342
  • #5356
  • 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 2018-01-28.01:01:04.244>
    created_at = <Date 2018-01-26.11:09:08.156>
    labels = ['interpreter-core', 'type-feature', '3.7']
    title = 'Add.isascii() to str, bytes and bytearray'
    updated_at = <Date 2018-01-28.01:01:04.244>
    user = 'https://github.com/methane'

    bugs.python.org fields:

    activity = <Date 2018-01-28.01:01:04.244>
    actor = 'methane'
    assignee = 'none'
    closed = True
    closed_date = <Date 2018-01-28.01:01:04.244>
    closer = 'methane'
    components = ['Interpreter Core']
    creation = <Date 2018-01-26.11:09:08.156>
    creator = 'methane'
    dependencies = []
    files = []
    hgrepos = []
    issue_num = 32677
    keywords = ['patch']
    message_count = 4.0
    messages = ['310754', '310755', '310839', '310902']
    nosy_count = 2.0
    nosy_names = ['vstinner', 'methane']
    pr_nums = ['5342', '5356']
    priority = 'normal'
    resolution = 'fixed'
    stage = 'resolved'
    status = 'closed'
    superseder = None
    type = 'enhancement'
    url = 'https://bugs.python.org/issue32677'
    versions = ['Python 3.7']

    @methane
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    @methane methane commented Jan 26, 2018

    int() and str.is*** functions accepts other than ASCII.
    But we want to accept only ASCII in some cases. (e.g. ipaddress module)

    We can use try-except to check ASCII, but it's inefficient.

    try:
    s.encode('ascii')
    except UnicodeEncodeError:
    ascii = False
    else:
    ascii = True

    CPython can check string is ASCII efficiently.

    (Voting on python-ideas ML now)

    @methane methane added 3.7 interpreter-core type-feature labels Jan 26, 2018
    @vstinner
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    @vstinner vstinner commented Jan 26, 2018

    @methane methane changed the title Add str.isascii() Add.isascii() to str, bytes and bytearray Jan 26, 2018
    @methane
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    @methane methane commented Jan 27, 2018

    New changeset a49ac99 by INADA Naoki in branch 'master':
    bpo-32677: Add .isascii() to str, bytes and bytearray (GH-5342)
    a49ac99

    @methane
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    @methane methane commented Jan 28, 2018

    New changeset bea5706 by INADA Naoki in branch 'master':
    bpo-32677: Optimize str.isascii() (GH-5356)
    bea5706

    @methane methane closed this Jan 28, 2018
    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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