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Symmetric difference on dict_views is inefficient #85066

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@rhettinger
BPO 40889
Nosy @rhettinger, @serhiy-storchaka, @sweeneyde
PRs
  • bpo-40889: special-case dict.items() ^ dict.items() for performance #20718
  • 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 2020-06-10.05:57:30.023>
    created_at = <Date 2020-06-06.17:09:59.550>
    labels = ['interpreter-core', '3.10', 'performance']
    title = 'Symmetric difference on dict_views is inefficient'
    updated_at = <Date 2020-06-10.06:50:59.313>
    user = 'https://github.com/rhettinger'

    bugs.python.org fields:

    activity = <Date 2020-06-10.06:50:59.313>
    actor = 'serhiy.storchaka'
    assignee = 'none'
    closed = True
    closed_date = <Date 2020-06-10.05:57:30.023>
    closer = 'methane'
    components = ['Interpreter Core']
    creation = <Date 2020-06-06.17:09:59.550>
    creator = 'rhettinger'
    dependencies = []
    files = []
    hgrepos = []
    issue_num = 40889
    keywords = ['patch']
    message_count = 11.0
    messages = ['370839', '370933', '370954', '370956', '370957', '370976', '371048', '371082', '371139', '371161', '371167']
    nosy_count = 3.0
    nosy_names = ['rhettinger', 'serhiy.storchaka', 'Dennis Sweeney']
    pr_nums = ['20718']
    priority = 'normal'
    resolution = 'fixed'
    stage = 'resolved'
    status = 'closed'
    superseder = None
    type = 'performance'
    url = 'https://bugs.python.org/issue40889'
    versions = ['Python 3.10']

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      3.10only security fixesinterpreter-core(Objects, Python, Grammar, and Parser dirs)performancePerformance or resource usage

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