Strange signature for memoryview constructor

[anntzer]

BPO	29111
Nosy	@larryhastings, @skrah, @1st1, @anntzer
Files	issue29111.diff

^{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/skrah'
closed_at = <Date 2016-12-30.11:31:28.208>
created_at = <Date 2016-12-30.01:59:52.958>
labels = ['interpreter-core', 'type-bug', '3.7']
title = 'Strange signature for memoryview constructor'
updated_at = <Date 2016-12-30.11:31:28.207>
user = 'https://github.com/anntzer'

bugs.python.org fields:

activity = <Date 2016-12-30.11:31:28.207>
actor = 'skrah'
assignee = 'skrah'
closed = True
closed_date = <Date 2016-12-30.11:31:28.208>
closer = 'skrah'
components = ['Interpreter Core']
creation = <Date 2016-12-30.01:59:52.958>
creator = 'Antony.Lee'
dependencies = []
files = ['46089']
hgrepos = []
issue_num = 29111
keywords = ['patch']
message_count = 3.0
messages = ['284302', '284324', '284327']
nosy_count = 5.0
nosy_names = ['larry', 'skrah', 'python-dev', 'yselivanov', 'Antony.Lee']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue29111'
versions = ['Python 3.5', 'Python 3.6', 'Python 3.7']

[anntzer]

The return value of inspect.signature(memoryview) is rather strange:

Python 3.5.2 (default, Nov  7 2016, 11:31:36) 
[GCC 6.2.1 20160830] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import inspect; inspect.signature(memoryview)
<Signature (module, /, object)>

[skrah]

The patch seems to fix it. $module was a thing at some point, I don't know whether the semantics changed or if it was wrong in the first place.

[python-dev]

New changeset 1e1e24629218 by Stefan Krah in branch '3.5':
Issue bpo-29111: Fix memoryview signature.
https://hg.python.org/cpython/rev/1e1e24629218