errors on ArchLinux and python3.9

[cyberic99]

Hello

I am trying to use scalene on some code.

I cannot post the whole code, but here is what it does, at least:

• creating threads, processes, using the 'forkserver' start method, on linux, and multiprocessing.get_context()
• overriding threading.Thread.run
• creating multiprocessing,queues

I tried to create a simple reproducer code, but I couldn't find what causes the error.

When my code creates new processes, I get these errors:

Exception ignored in: <function _after_fork at 0x559984ec9880>
Traceback (most recent call last):
  File "/usr/lib/python3.9/threading.py", line 1496, in _after_fork
    thread._reset_internal_locks(False)
  File "/usr/lib/python3.9/threading.py", line 827, in _reset_internal_locks
    self._started._at_fork_reinit()
  File "/usr/lib/python3.9/threading.py", line 527, in _at_fork_reinit
    self._cond._at_fork_reinit()
  File "/usr/lib/python3.9/threading.py", line 253, in _at_fork_reinit
    self._lock._at_fork_reinit()
AttributeError: 'ReplacementLock' object has no attribute '_at_fork_reinit'

Is there a way to get more details about this exception?

Thank you

[cyberic99]

sorry, wrong project. I meant to create this issue for scalene.