true/proper subset

[abcdef]

BPO	16380
Nosy	@mdickinson, @asvetlov

^{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 2012-11-01.19:50:16.311>
created_at = <Date 2012-11-01.13:02:34.887>
labels = ['type-feature', 'docs']
title = 'true/proper subset'
updated_at = <Date 2012-11-01.19:50:16.308>
user = 'https://bugs.python.org/abcdef'

bugs.python.org fields:

activity = <Date 2012-11-01.19:50:16.308>
actor = 'asvetlov'
assignee = 'docs@python'
closed = True
closed_date = <Date 2012-11-01.19:50:16.311>
closer = 'asvetlov'
components = ['Documentation']
creation = <Date 2012-11-01.13:02:34.887>
creator = 'abcdef'
dependencies = []
files = []
hgrepos = []
issue_num = 16380
keywords = []
message_count = 3.0
messages = ['174410', '174411', '174458']
nosy_count = 4.0
nosy_names = ['mark.dickinson', 'asvetlov', 'docs@python', 'abcdef']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue16380'
versions = ['Python 2.7', 'Python 3.2', 'Python 3.3', 'Python 3.4']

[abcdef]

The documentation

http://docs.python.org/2.7/library/stdtypes.html#set-types-set-frozenset

http://docs.python.org/3/library/stdtypes.html#set-types-set-frozenset

of "<" for sets uses "true subset" and "true superset". The correct termininology is "proper subset" and "proper superset", as evidenced by Google searches

http://google.com/search?q="true subset"

http://google.com/search?q="proper subset"

and most set theory books.

[mdickinson]

+1

[asvetlov]

Fixed in 56c3ab6f7f07, 56c3ab6f7f07, fa7311caa203, 7dda9dc5e830
Thanks.