AttributeError: 'FileWrapper' object has no attribute 'fileno'

[papoteur-mga]

I'm trying this basic example:

from pychroot import Chroot
with Chroot("/home/yves/mock/lib/mageia-cauldron-x86_64/root"):
    pass

But I get:

Running script: "petit_test.py"
Traceback (most recent call last):
  File "petit_test.py", line 2, in <module>
    with Chroot("/home/yves/mock/lib/mageia-cauldron-x86_64/root"):
  File "/usr/lib/python3.10/site-packages/snakeoil/contexts.py", line 165, in __exit__
    raise exc
AttributeError: 'FileWrapper' object has no attribute 'fileno'