Support for python 3.10: DeprecationWarning: isSet() is deprecated, use is_set() instead

[CaselIT]

Hi,

In SQLAlchemy we are trying to add support for python 3.10, (since we are starting to get issue about it, like sqlalchemy/sqlalchemy#6540)

We use xdist and currently we need to setup warn filters for some deprecation warning coming from this project. Like

INTERNALERROR>   File "/home/runner/work/sqlalchemy/sqlalchemy/.tox/github-cext/lib/python3.10/site-packages/xdist/workermanage.py", line 269, in setup
INTERNALERROR>     self.channel.setcallback(self.process_from_remote, endmarker=self.ENDMARK)
INTERNALERROR>   File "/home/runner/work/sqlalchemy/sqlalchemy/.tox/github-cext/lib/python3.10/site-packages/execnet/gateway_base.py", line 594, in setcallback
INTERNALERROR>     if not (self._closed or self._receiveclosed.isSet()):
INTERNALERROR>   File "/opt/hostedtoolcache/Python/3.10.0-beta.1/x64/lib/python3.10/threading.py", line 557, in isSet
INTERNALERROR>     warnings.warn('isSet() is deprecated, use is_set() instead',
INTERNALERROR> DeprecationWarning: isSet() is deprecated, use is_set() instead

It would be great it this package could be updated to support python 3.10 without having to setup warn filters

[nicoddemus]

Hi @CaselIT,

Thanks for the report!

A PR removing those warnings would be great if you have the time to spare.

As it stands we are short on people maintaining execnet, so any help is welcome!

[CaselIT]

I'll try to look into it. Hopefully that's the only warning

[RonnyPfannschmidt]

#127 needs to be released

[CaselIT]

I searched only among the issues and missed that PR. Then this can be closed once a new release is published