imp.new_module does not function correctly if the module is returned from a function and used directly

[jkp]

BPO	7140
Nosy	@terryjreedy, @pitrou, @benjaminp
Superseder	bpo-18214: Stop purging modules which are garbage collected before shutdown
Files	testcase.py: Testcase demonstrating the issue. testcase.py

^{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 2013-07-31.09:36:01.655>
created_at = <Date 2009-10-15.11:24:51.053>
labels = ['type-bug', 'library']
title = 'imp.new_module does not function correctly if the module is returned from a function and used directly'
updated_at = <Date 2013-07-31.09:36:01.653>
user = 'https://bugs.python.org/jkp'

bugs.python.org fields:

activity = <Date 2013-07-31.09:36:01.653>
actor = 'pitrou'
assignee = 'none'
closed = True
closed_date = <Date 2013-07-31.09:36:01.655>
closer = 'pitrou'
components = ['Library (Lib)']
creation = <Date 2009-10-15.11:24:51.053>
creator = 'jkp'
dependencies = []
files = ['15133', '15134']
hgrepos = []
issue_num = 7140
keywords = []
message_count = 7.0
messages = ['94082', '94083', '94095', '118480', '118819', '121213', '193992']
nosy_count = 5.0
nosy_names = ['terry.reedy', 'pitrou', 'benjamin.peterson', 'jkp', 'Arfrever']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = None
status = 'closed'
superseder = '18214'
type = 'behavior'
url = 'https://bugs.python.org/issue7140'
versions = ['Python 3.1', 'Python 2.7', 'Python 3.2']

[jkp]

See the testcase included. If you instead assign the result of the
get_module() call to a variable and then make the call to the function
defined in that module it works as expected.

[jkp]

Updated the testcase to show that the __dict__ for the module is incorrect
unless the module is assigned to a temp variable.

[benjaminp]

Fixed in r75437.

[benjaminp]

Rebroken in r85392. See bpo-10068.

[terryjreedy]

Since that revision only touched py3k, I am guessing that it only broke 3.2.

[Arfrever]

But there were r85393 (2.7) and r85394 (3.1).

[pitrou]

Work in progress in bpo-18214.