[issue46047] When using Py_NewInterpreter, some modules fail to import in Python 3.10

[Jonas Witschel]

New submission from Jonas Witschel :

Consider the following minimal example C code which is trying to import 
jsonschema (https://python-jsonschema.readthedocs.io/en/stable/), compiled 
using "gcc test_newinterpreter.c -I /usr/include/python3.10 -lpython3.10 -o 
test_newinterpreter" or similar:

#include 

int main(void) {
Py_Initialize();
PyThreadState *interpreter = Py_NewInterpreter();
PyRun_SimpleString("import jsonschema");
Py_Finalize();  
}

In Python 3.9.9, this works as expected. However in Python 3.10.0, the 
following error is produced:

Traceback (most recent call last):
  File "", line 1, in 
  File "/usr/lib/python3.10/site-packages/jsonschema/__init__.py", line 21, in 

from jsonschema._types import TypeChecker
  File "/usr/lib/python3.10/site-packages/jsonschema/_types.py", line 168, in 

draft3_type_checker = TypeChecker(
TypeError: TypeChecker() takes no arguments

Removing the Py_NewInterpreter() call makes the example work as expected in 
Python 3.10.0.

This might be related to the enhancements to the type cache from bpo-42745.

Another recent bug report I found that might possibly be related is bpo-46036.

This bug breaks some WeeChat plugins that try to import one of the affected 
modules, e.g. weechat-matrix (https://github.com/poljar/weechat-matrix).

--
components: C API, Subinterpreters
messages: 408295
nosy: diabonas
priority: normal
severity: normal
status: open
title: When using Py_NewInterpreter, some modules fail to import in Python 3.10
type: compile error
versions: Python 3.10

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[issue46047] When using Py_NewInterpreter, some modules fail to import in Python 3.10

[Jonas Witschel]

Jonas Witschel  added the comment:

Downstream bug report in Arch Linux: https://bugs.archlinux.org/task/72979

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[issue46047] When using Py_NewInterpreter, some modules fail to import in Python 3.10

[Jonas Witschel]

Jonas Witschel  added the comment:

I notice this has already been reported as bpo-46006 and bpo-46034, so closing 
in favour of these.

--
resolution:  -> duplicate
stage:  -> resolved
status: open -> closed

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[issue46006] [subinterpreter] _PyUnicode_EqualToASCIIId() issue with subinterpreters

[Jonas Witschel]

Change by Jonas Witschel :


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nosy: +diabonas

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[issue46067] SSLContext.set_npn_protocols broken in Python 3.10, tries to call non-existing _set_npn_protocols

[Jonas Witschel]

New submission from Jonas Witschel :

Consider the following minimal example:

import ssl
context = ssl.create_default_context()
context.set_npn_protocols(['http/1.1', 'spdy/2'])

In Python 3.10, it fails with the following error:

AttributeError: 'SSLContext' object has no attribute '_set_npn_protocols'. Did 
you mean: 'set_npn_protocols'?

This is because bpo-43669 
(https://github.com/python/cpython/commit/39258d3595300bc7b952854c915f63ae2d4b9c3e)
 removed _set_npn_protocols, while it is still used by 
SSLContext.set_npn_protocols: 
https://github.com/python/cpython/blob/191c431de7d9b23484dd16f67e62c6e85a1fac7f/Lib/ssl.py#L551

Note that the function is already deprecated in Python 3.10 and throws a

DeprecationWarning: ssl NPN is deprecated, use ALPN instead

but should still probably continue working for now.

--
assignee: christian.heimes
components: SSL
messages: 408466
nosy: christian.heimes, diabonas
priority: normal
severity: normal
status: open
title: SSLContext.set_npn_protocols broken in Python 3.10, tries to call 
non-existing _set_npn_protocols
type: compile error
versions: Python 3.10

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