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Clarify built-in types comparisons #78733

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Windsooon mannequin opened this issue Aug 31, 2018 · 4 comments
Closed

Clarify built-in types comparisons #78733

Windsooon mannequin opened this issue Aug 31, 2018 · 4 comments
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3.7 (EOL) end of life 3.8 (EOL) end of life docs Documentation in the Doc dir type-feature A feature request or enhancement

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@Windsooon
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Windsooon mannequin commented Aug 31, 2018

BPO 34552
Nosy @gvanrossum, @njsmith, @zware, @miss-islington, @Windsooon, @iritkatriel
PRs
  • bpo-34552: Clarify built-in types comparisons #9035
  • 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 2020-10-08.22:06:03.693>
    created_at = <Date 2018-08-31.05:37:52.432>
    labels = ['3.8', 'type-feature', '3.7', 'docs']
    title = 'Clarify built-in types comparisons'
    updated_at = <Date 2020-10-08.22:06:03.693>
    user = 'https://github.com/Windsooon'

    bugs.python.org fields:

    activity = <Date 2020-10-08.22:06:03.693>
    actor = 'gvanrossum'
    assignee = 'docs@python'
    closed = True
    closed_date = <Date 2020-10-08.22:06:03.693>
    closer = 'gvanrossum'
    components = ['Documentation']
    creation = <Date 2018-08-31.05:37:52.432>
    creator = 'Windson Yang'
    dependencies = []
    files = []
    hgrepos = []
    issue_num = 34552
    keywords = ['patch']
    message_count = 4.0
    messages = ['324403', '325324', '378287', '378289']
    nosy_count = 7.0
    nosy_names = ['gvanrossum', 'njs', 'docs@python', 'zach.ware', 'miss-islington', 'Windson Yang', 'iritkatriel']
    pr_nums = ['9035']
    priority = 'normal'
    resolution = 'fixed'
    stage = 'resolved'
    status = 'closed'
    superseder = None
    type = 'enhancement'
    url = 'https://bugs.python.org/issue34552'
    versions = ['Python 2.7', 'Python 3.4', 'Python 3.5', 'Python 3.6', 'Python 3.7', 'Python 3.8']

    @Windsooon
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    Windsooon mannequin commented Aug 31, 2018

    In https://docs.python.org/3.5/library/stdtypes.html#comparisons

    "some types (for example, function objects) support only a degenerate notion of comparison where any two objects of that type are unequal."

    We had some discussion at zulipchat already:

    "more seriously: I think we can just delete that sentence. The next sentence makes clear that < and friends arne't always defined, and the sentence after that notes that == defaults to is if there's nothing better." - by Nathaniel J. Smith

    IMO, I think we should also clarify the relationship between "==", "is" and "__eq__".

    @Windsooon Windsooon mannequin added 3.7 (EOL) end of life 3.8 (EOL) end of life labels Aug 31, 2018
    @Windsooon Windsooon mannequin assigned docspython Aug 31, 2018
    @Windsooon Windsooon mannequin added docs Documentation in the Doc dir type-feature A feature request or enhancement labels Aug 31, 2018
    @miss-islington
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    New changeset 1aeba74 by Miss Islington (bot) (Windson yang) in branch 'master':
    bpo-34552: Clarify built-in types comparisons (GH-9035)
    1aeba74

    @iritkatriel
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    This seems complete, can it be closed?

    @gvanrossum
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    Yup. Thanks for catching this!

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