python 3.9.2 windows argparse no module _typeshed

MCVE:
```python
import argparse
```

Error:
```none
Traceback (most recent call last):
  File "C:\Users\Star\git\optomata\options.py", line 1, in <module>
    from _typeshed import AnyPath
ModuleNotFoundError: No module named '_typeshed'
```

At this point I don't know what to do.

https://github.com/python/typeshed/issues/5021 doesn't seem related