Description

hauntsaninja

opened on Jan 31, 2020

Issue body actions

BPO	39504
Nosy	@hauntsaninja

^{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 = None
created_at = <Date 2020-01-31.02:12:38.905>
labels = ['library']
title = 'inspect.signature throws RuntimeError on select.epoll.register'
updated_at = <Date 2020-01-31.02:12:38.905>
user = 'https://github.com/hauntsaninja'

bugs.python.org fields:

activity = <Date 2020-01-31.02:12:38.905>
actor = 'hauntsaninja'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-01-31.02:12:38.905>
creator = 'hauntsaninja'
dependencies = []
files = []
hgrepos = []
issue_num = 39504
keywords = []
message_count = 1.0
messages = ['361089']
nosy_count = 1.0
nosy_names = ['hauntsaninja']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue39504'
versions = []

Activity

1. hauntsaninja commented on Jan 31, 2020

   

   hauntsaninja

   on Jan 31, 2020

   ContributorAuthor

   More actions

   From the documentation of inspect.signature it seems we should never have a RuntimeError:

   Raises ValueError if no signature can be provided, and TypeError if that type of object is not supported.
   

   The easiest thing to do is just turn the RuntimeError into a ValueError... but I'll take a deeper look and see if I can actually fix this.

   Traceback below:

   >>> import sys
   >>> sys.version
   '3.8.0 (default, Nov 14 2019, 22:29:45) \n[GCC 5.4.0 20160609]'
   >>> import inspect
   >>> import select
   >>> inspect.signature(select.epoll.register)
   Traceback (most recent call last):
     File "/usr/lib/python3.8/inspect.py", line 2004, in wrap_value
       value = eval(s, module_dict)
     File "<string>", line 1, in <module>
   NameError: name 'EPOLLIN' is not defined
   During handling of the above exception, another exception occurred:
   Traceback (most recent call last):
     File "/usr/lib/python3.8/inspect.py", line 2007, in wrap_value
       value = eval(s, sys_module_dict)
     File "<string>", line 1, in <module>
   NameError: name 'EPOLLIN' is not defined
   During handling of the above exception, another exception occurred:
   Traceback (most recent call last):
     File "<stdin>", line 1, in <module>
     File "/usr/lib/python3.8/inspect.py", line 3093, in signature
       return Signature.from_callable(obj, follow_wrapped=follow_wrapped)
     File "/usr/lib/python3.8/inspect.py", line 2842, in from_callable
       return _signature_from_callable(obj, sigcls=cls,
     File "/usr/lib/python3.8/inspect.py", line 2296, in _signature_from_callable
       return _signature_from_builtin(sigcls, obj,
     File "/usr/lib/python3.8/inspect.py", line 2109, in _signature_from_builtin
       return _signature_fromstr(cls, func, s, skip_bound_arg)
     File "/usr/lib/python3.8/inspect.py", line 2057, in _signature_fromstr
       p(name, default)
     File "/usr/lib/python3.8/inspect.py", line 2039, in p
       default_node = RewriteSymbolics().visit(default_node)
     File "/usr/lib/python3.8/ast.py", line 360, in visit
       return visitor(node)
     File "/usr/lib/python3.8/ast.py", line 445, in generic_visit
       new_node = self.visit(old_value)
     File "/usr/lib/python3.8/ast.py", line 360, in visit
       return visitor(node)
     File "/usr/lib/python3.8/ast.py", line 445, in generic_visit
       new_node = self.visit(old_value)
     File "/usr/lib/python3.8/ast.py", line 360, in visit
       return visitor(node)
     File "/usr/lib/python3.8/inspect.py", line 2031, in visit_Name
       return wrap_value(node.id)
     File "/usr/lib/python3.8/inspect.py", line 2009, in wrap_value
       raise RuntimeError()
   RuntimeError
   
2. hauntsaninja

   added

   stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

   on Jan 31, 2020
3. ezio-melotti

   transferred this issue fromon Apr 10, 2022
4. hauntsaninja

   added a commit that references this issue on Oct 28, 2022

   pythongh-85267: Improvements to inspect.signature __text_signature__ …

   16ae02e
5. JelleZijlstra

   added a commit that references this issue on Dec 21, 2022

   gh-85267: Improvements to inspect.signature __text_signature__ handli…

   79311cb
6. hauntsaninja

   added 2 commits that reference this issue on Dec 21, 2022

   [3.11] pythongh-85267: Improvements to inspect.signature __text_signa…

   14a483c

   [3.10] pythongh-85267: Improvements to inspect.signature __text_signa…

   e34fbcc
7. JelleZijlstra

   added 2 commits that reference this issue on Dec 21, 2022

   [3.11] gh-85267: Improvements to inspect.signature __text_signature__…

   bee9051

   [3.10] gh-85267: Improvements to inspect.signature __text_signature__…

   919045c
8. hauntsaninja

   closed this as completedon Dec 24, 2022
9. iritkatriel

   added a commit that references this issue on Dec 28, 2022

   Merged main into regmachine branch (#50)

   fdc73cb
10. arhadthedev commented on Feb 9, 2023

    

    arhadthedev

    on Feb 9, 2023

    Member

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    Should this bugfix be backported? Asking since it was reported for 3.11 once again, in gh-101717.
11. hauntsaninja commented on Feb 9, 2023

    

    hauntsaninja

    on Feb 9, 2023

    ContributorAuthor

    More actions

    This was backported

    Reacted by Erlend E. Aasland

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