python3.8 and namedlist1.7 is Incompatible

[Simonyu]

BPO	38977
Nosy	@ericvsmith, @tirkarthi

^{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 2019-12-05.10:38:57.503>
created_at = <Date 2019-12-05.10:15:29.804>
labels = ['3.8', 'type-bug', 'library']
title = 'python3.8 and namedlist1.7 is Incompatible'
updated_at = <Date 2020-04-21.10:15:00.062>
user = 'https://bugs.python.org/Simonyu'

bugs.python.org fields:

activity = <Date 2020-04-21.10:15:00.062>
actor = 'raina'
assignee = 'none'
closed = True
closed_date = <Date 2019-12-05.10:38:57.503>
closer = 'xtreak'
components = ['Library (Lib)']
creation = <Date 2019-12-05.10:15:29.804>
creator = 'Simon.yu'
dependencies = []
files = []
hgrepos = []
issue_num = 38977
keywords = []
message_count = 4.0
messages = ['357842', '357843', '357844', '366916']
nosy_count = 4.0
nosy_names = ['eric.smith', 'xtreak', 'Simon.yu', 'raina']
pr_nums = []
priority = 'normal'
resolution = 'third party'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue38977'
versions = ['Python 3.8']

[Simonyu]

When I use pytest based on python3.8, met a problem,it seems namedlist1.7 is incompatible!!

see blow logs:
----------------------
File "C:\Program Files\Python38\lib\site-packages\namedlist.py", line 180, in _make_fn
code = compile(module_node, '<string>', 'exec')
TypeError: required field "posonlyargs" missing from arguments
----------------------

[tirkarthi]

This issue tracker is for issues related to CPython. Please report this to the respective issue tracker at https://bitbucket.org/ericvsmith/namedlist/issues. The error message looks related to handling positional only arguments that needs to be fixed in the library during ast construction at probably https://bitbucket.org/ericvsmith/namedlist/src/8db03a94fcc15184ccdf7a58f91c48bc5bcd3331/namedlist.py#lines-159. I think this can be closed as third party.

[tirkarthi]

From Python 3.8, type_ignores is also mandatory for ast.Module as discussed in bpo-35894 which also needs to be fixed in the module. Closing this as third party as I don't see any apparent regression here in 3.8.

[raina]

Traceback (most recent call last):
  File "c:\users\raina\appdata\local\programs\python\python38\lib\runpy.py", line 193, in _run_module_as_main
    return _run_code(code, main_globals, None,
......  
code = compile(module_node, '<string>', 'exec')
TypeError: required field "posonlyargs" missing from arguments