[issue19941] python -m imports non-ASCII .py file without encoding declaration

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

I confirm: Python 3.10 works as expected.

Python 3.10 fails with the same SyntaxError using "python script.py" or "python -m script" if the script contains non-ASCII characters but is not encoded to UTF-8.

vstinner at apu$ python3 test.py
  File "/home/vstinner/test.py", line 1
    print('�Hello world!')
                         ^
SyntaxError: (unicode error) 'utf-8' codec can't decode byte 0xa1 in position 0: invalid start byte

vstinner at apu$ python3 -m test
Traceback (most recent call last):
  (...)
  File "/home/vstinner/test.py", line 1
    print('�Hello world!')
                         ^
SyntaxError: (unicode error) 'utf-8' codec can't decode byte 0xa1 in position 0: invalid start byte

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue19941>
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