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the `_pyio` module at line 16 tries to check whether it is running on Windows platform, by doing:
```
if os.name == 'win32':
 from msvcrt import setmode as _setmode
else:
 _setmode = None
```
However, the string returned by os.name is 'nt' and not 'win32' (the latter is returned by `sys.platform`). Therefore, the value is always False and the setmode function from mscvrt module is never imported.
Thank you.
Cheers,
Cosimo