Guido van Rossum added the comment:
This is expected -- those modules contain C extensions for which no 3.10 wheels
are available from PyPI yet, so pip tries to build them locally.
If you want to help testing, please install the recommended free version of the
MS C++ compiler. From
New submission from Shreyan Avigyan :
A few days ago, I tried installing Python 3.10.a3 for testing. After
installing, I tried using the Python built-in modules, they were working fine.
Then I tried going for installing third party modules using pip from the
command prompt. While installing
