[issue25937] DIfference between utf8 and utf-8 when i define python source code encoding.

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

> I wonder why this does not trigger the exception.

Because in case of utf-8 and iso-8859-1 decoding and encoding steps are omitted.

In general case the input is decoded from specified encoding and than encoded to UTF-8 for parser. But for utf-8 and iso-8859-1 encodings the parser gets the raw data.

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<http://bugs.python.org/issue25937>
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