Serhiy Storchaka added the comment:
What about first line? Currently both Python interpreter and the tokenize
module decode it from UTF-8 (actually due to bug #18960 Python interprets it
twice, in different encodings). PEP 263 says:
1. The complete Python source file should use a single encoding.
Embedding of differently encoded data is not allowed and will
result in a decoding error during compilation of the Python
source code.
I conclude that the first line should be decoded with the encoding specified in
the second line. We first should read the first line, check if it isn't a
comment or contains encoding cookie, otherwise read the second line, determine
the encoding, and decode read lines. Perhaps it will untangle issue18960 too.
----------
assignee: -> serhiy.storchaka
stage: -> needs patch
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue18961>
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