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PEP 563 and annotations __future__ mandatory version #85486

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PEP 563 and annotations __future__ mandatory version#85486
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3.10 (EOL)end of life3.8 (EOL)end of life3.9 (EOL)end of lifedocsDocumentation in the Doc dirstdlibStandard Library Python modules in the Lib/ directory

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@wyz23x2
wyz23x2
mannequin
opened on Jul 16, 2020
BPO 41314
Nosy @gvanrossum, @terryjreedy, @ned-deily, @ambv, @YoSTEALTH, @miss-islington, @wyz23x2
PRs
  • bpo-41314: fixed annotations __future__ version #21616
  • [3.9] bpo-41314: fixed annotations __future__ version (GH-21616) #21620
  • [3.8] bpo-41314: fixed annotations __future__ version (GH-21616) #21621
    		•

    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 2020-07-25.22:12:13.148>
created_at = <Date 2020-07-16.10:34:24.413>
labels = ['3.8', 'library', '3.9', '3.10', 'docs']
title = 'PEP 563 and annotations __future__ mandatory version'
updated_at = <Date 2020-07-25.22:12:13.147>
user = 'https://github.com/wyz23x2'

    bugs.python.org fields:

    activity = <Date 2020-07-25.22:12:13.147>
actor = 'gvanrossum'
assignee = 'docs@python'
closed = True
closed_date = <Date 2020-07-25.22:12:13.148>
closer = 'gvanrossum'
components = ['Documentation', 'Library (Lib)']
creation = <Date 2020-07-16.10:34:24.413>
creator = 'wyz23x2'
dependencies = []
files = []
hgrepos = []
issue_num = 41314
keywords = ['patch']
message_count = 12.0
messages = ['373753', '373872', '373907', '374271', '374272', '374283', '374284', '374285', '374287', '374289', '374290', '374292']
nosy_count = 8.0
nosy_names = ['gvanrossum', 'terry.reedy', 'ned.deily', 'docs@python', 'lukasz.langa', 'YoSTEALTH', 'miss-islington', 'wyz23x2']
pr_nums = ['21616', '21620', '21621']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue41314'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']

    Activity

    1. wyz23x2 commented on Jul 16, 2020

      @wyz23x2
      wyz23x2mannequin
      on Jul 16, 2020
      MannequinAuthor

      In https://docs.python.org/3/library/__future__.html:
      annotations | 3.7.0b1 | *4.0* | PEP-563: Postponed evaluation of annotations

      In PEP-563:
      Starting with Python 3.7, a __future__ import is required to use the described functionality. No warnings are raised.

      In Python *3.10* this will become the default behavior. Use of annotations incompatible with this PEP is no longer supported.

      Python 4.0 or 3.10? Not clear.

    2. wyz23x2
      added
      docsDocumentation in the Doc dir
      3.7 (EOL)end of life
      3.10 (EOL)end of life
      on Jul 16, 2020
    3. wyz23x2
      assigned
      docspython
      on Jul 16, 2020
    4. wyz23x2
      added
      docsDocumentation in the Doc dir
      3.7 (EOL)end of life
      3.10 (EOL)end of life
      on Jul 16, 2020
    5. wyz23x2
      assigned
      docspython
      on Jul 16, 2020
    6. wyz23x2
      added
      stdlibStandard Library Python modules in the Lib/ directory
      on Jul 18, 2020

    7. terryjreedy commented on Jul 18, 2020

      @terryjreedy
      terryjreedy
      on Jul 18, 2020
      Member

      The PEP was accepted apparently by Guido sometime after the second posting 21-Nov-2017. Guido added the annotations entry to __future__ on 1/26/2018 with the 'mandatory' version changed to 4.0, which means 'some indefinite undecided future version'. I consider '4.0' to the intentional and definitive until Guido or Lucasz say otherwise.

      When PEP implementations differ from the PEP, we do not usually go back and revise the PEP. The implementation rules unless clearly buggy.

    8. terryjreedy
      added
      3.8 (EOL)end of life
      3.9 (EOL)end of life
      and removed
      3.7 (EOL)end of life
      on Jul 18, 2020

    9. 15 remaining items

    10. gvanrossum commented on Jul 25, 2020

      @gvanrossum
      gvanrossum
      on Jul 25, 2020
      Member

      Waiting for someone to submit a PR.

    11. YoSTEALTH
      added
      3.7 (EOL)end of life
      on Jul 25, 2020

    12. miss-islington commented on Jul 25, 2020

      @miss-islington
      miss-islington
      on Jul 25, 2020
      Contributor

      New changeset 0028c14 by YoSTEALTH in branch 'master':
      bpo-41314: fixed annotations __future__ version (GH-21616)
      0028c14

    13. gvanrossum commented on Jul 25, 2020

      @gvanrossum
      gvanrossum
      on Jul 25, 2020
      Member

      @ned This will need your assistance to merge the 3.7 backport IIUC.

    14. gvanrossum commented on Jul 25, 2020

      @gvanrossum
      gvanrossum
      on Jul 25, 2020
      Member

      Never mind, Miss Islington failed to backport to 3.7, so let's forget about that.

    15. gvanrossum
      removed
      3.7 (EOL)end of life
      on Jul 25, 2020

    16. YoSTEALTH commented on Jul 25, 2020

      @YoSTEALTH
      YoSTEALTHmannequin
      on Jul 25, 2020
      Mannequin

      @gvanrossum I found couple of odd places where 4.0 is mentioned like https://docs.python.org/3/library/array.html for example, should a new issue be created? I am not sure how many more there are.

    17. miss-islington commented on Jul 25, 2020

      @miss-islington
      miss-islington
      on Jul 25, 2020
      Contributor

      New changeset b99f770 by Miss Islington (bot) in branch '3.8':
      bpo-41314: fixed annotations __future__ version (GH-21616)
      b99f770

    18. miss-islington commented on Jul 25, 2020

      @miss-islington
      miss-islington
      on Jul 25, 2020
      Contributor

      New changeset fdc91c2 by Miss Islington (bot) in branch '3.9':
      bpo-41314: fixed annotations __future__ version (GH-21616)
      fdc91c2

    19. gvanrossum commented on Jul 25, 2020

      @gvanrossum
      gvanrossum
      on Jul 25, 2020
      Member

      In general, "4.0" means "never", and for some deprecations that seems totally appropriate. I wouldn't worry about it. I'm closing this issue now that all three PRs have been merged. Thanks for your contribution!

    20. gvanrossum
      closed this as completedon Jul 25, 2020
    21. gvanrossum
      closed this as completedon Jul 25, 2020
    22. ezio-melotti
      transferred this issue fromon Apr 10, 2022
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