Steve Dower added the comment:
What's your actual command? And what output is it producing? Without those,
we've got no hope of guessing what is going on here.
Nothing in subprocess should have changed because of my PEPs, other than
decoding bytes passed as arguments (which IIRC wasn't possibl
New submission from Вадим Кара:
check_output(['command'])
Can't be decoded as it was in 3.5
check_output(['command']).decode('utf-8') returns UnicodeDecodeError: 'utf-8'
codec can't decode byte 0x8d in position 2: invalid start byte error.
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components: Windows
messages: 287239
nosy: p