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8.3. collections — Container datatypes #76163

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catchmonster mannequin opened this issue Nov 8, 2017 · 6 comments
Closed

8.3. collections — Container datatypes #76163

catchmonster mannequin opened this issue Nov 8, 2017 · 6 comments
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@rhettinger
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docs Documentation in the Doc dir

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@catchmonster
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Mannequin

catchmonster mannequin commented Nov 8, 2017

BPO 31982
Nosy @rhettinger, @csabella, @catchmonster, @miss-islington
PRs
  • bpo-31982: Improve sequence of presentation in ChainMap docs #11960
  • [3.7] bpo-31982: Improve sequence of presentation in ChainMap docs (GH-11960) #11961
    		•

    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 = 'https://github.com/rhettinger'
closed_at = <Date 2019-02-20.22:25:43.592>
created_at = <Date 2017-11-08.16:10:51.930>
labels = ['docs']
title = '8.3. collections \xe2\x80\x94 Container datatypes'
updated_at = <Date 2019-02-20.22:25:43.592>
user = 'https://github.com/catchmonster'

    bugs.python.org fields:

    activity = <Date 2019-02-20.22:25:43.592>
actor = 'rhettinger'
assignee = 'rhettinger'
closed = True
closed_date = <Date 2019-02-20.22:25:43.592>
closer = 'rhettinger'
components = ['Documentation']
creation = <Date 2017-11-08.16:10:51.930>
creator = 'Sasha Kacanski'
dependencies = []
files = []
hgrepos = []
issue_num = 31982
keywords = ['patch']
message_count = 6.0
messages = ['305876', '305903', '305905', '334307', '336152', '336153']
nosy_count = 5.0
nosy_names = ['rhettinger', 'docs@python', 'cheryl.sabella', 'Sasha Kacanski', 'miss-islington']
pr_nums = ['11960', '11961']
priority = 'low'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue31982'
versions = ['Python 3.6']
    @catchmonster
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    catchmonster mannequin commented Nov 8, 2017

    Hi,
    In ChainMap example
    c = ChainMap() # Create root context
    d = c.new_child() # Create nested child context
    e = c.new_child() # Child of c, independent from d
    e.maps[0] # Current context dictionary -- like Python's locals()
    e.maps[-1] # Root context -- like Python's globals()
    e.parents # Enclosing context chain -- like Python's nonlocals

    d['x'] # Get first key in the chain of contexts
    d['x'] = 1 # Set value in current context

    d['x'] - will raise key does not exist error

    so simple fix is to flip last two lines...

    I know, possibly anal but look love Python and would like to help new folks to not get confused if they play with example in cPython shell...

    --best

    @catchmonster catchmonster mannequin assigned docspython Nov 8, 2017
    @catchmonster catchmonster mannequin added the docs Documentation in the Doc dir label Nov 8, 2017
    @rhettinger
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    I will flip the two because there is not downside. However, the table of wasn't intended to be a sequential example (that's why there is no data or display of result). Instead, it was just meant to be table of typing-this-does-that.

    @rhettinger rhettinger assigned rhettinger and unassigned docspython Nov 8, 2017
    @catchmonster
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    catchmonster mannequin commented Nov 8, 2017

    Agree, and I know.

    On Nov 8, 2017 3:41 PM, "Raymond Hettinger" <report@bugs.python.org> wrote:

    Raymond Hettinger <raymond.hettinger@gmail.com> added the comment:

    I will flip the two because there is not downside. However, the table of
    wasn't intended to be a sequential example (that's why there is no data or
    display of result). Instead, it was just meant to be table of
    typing-this-does-that.

    ----------
    assignee: docs@python -> rhettinger
    nosy: +rhettinger
    priority: normal -> low

    Python tracker <report@bugs.python.org>
    <https://bugs.python.org/issue31982\>

    @csabella
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    This is a duplicate of bpo-31075, which was closed as 'Not a bug'.

    @miss-islington
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    New changeset 9b0c681 by Miss Islington (bot) (Raymond Hettinger) in branch 'master':
    bpo-31982: Improve sequence of presentation in ChainMap docs (GH-11960)
    9b0c681

    @rhettinger
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    New changeset 14baf06 by Raymond Hettinger (Miss Islington (bot)) in branch '3.7':
    bpo-31982: Improve sequence of presentation in ChainMap docs (GH-11960) (GH-11961)
    14baf06

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