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inspect.signature fails on some functions which use Argument Clinic #64360
Description
| BPO | 20161 |
|---|---|
| Nosy | @larryhastings, @serhiy-storchaka |
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/larryhastings'
closed_at = <Date 2014-01-07.20:53:31.930>
created_at = <Date 2014-01-07.09:38:39.405>
labels = ['type-bug']
title = 'inspect.signature fails on some functions which use Argument Clinic'
updated_at = <Date 2014-01-07.20:53:31.930>
user = 'https://github.com/serhiy-storchaka'bugs.python.org fields:
activity = <Date 2014-01-07.20:53:31.930>
actor = 'larry'
assignee = 'larry'
closed = True
closed_date = <Date 2014-01-07.20:53:31.930>
closer = 'larry'
components = []
creation = <Date 2014-01-07.09:38:39.405>
creator = 'serhiy.storchaka'
dependencies = []
files = []
hgrepos = []
issue_num = 20161
keywords = []
message_count = 3.0
messages = ['207521', '207522', '207593']
nosy_count = 2.0
nosy_names = ['larry', 'serhiy.storchaka']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue20161'
versions = ['Python 3.4']
Activity
serhiy-storchaka commentedon Jan 7, 2014
inspect.signature fails on some functions which use Argument Clinic. For example after applying bpo-20133 or bpo-20151 it fails for audioop.ratecv and binascii.a2b_qp.
>>> inspect.signature(audioop.ratecv) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/serhiy/py/cpython/Lib/inspect.py", line 1468, in signature return Signature.from_builtin(obj) File "/home/serhiy/py/cpython/Lib/inspect.py", line 1989, in from_builtin p(name, default) File "/home/serhiy/py/cpython/Lib/inspect.py", line 1982, in p default = default.n AttributeError: type object '_empty' has no attribute 'n'larryhastings commentedon Jan 7, 2014
I already noticed this; it'll be fixed in the patch for bpo-20144. But thanks for the report!
larryhastings commentedon Jan 7, 2014
Fixed as a side effect of fixing bpo-20144. And by the way this was never a release blocker.