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Tue Sep 28 13:29:18 CEST 2010 · https://mail.python.org/pipermail/python-dev/2010-September/104211.html

  On 28/09/2010 12:19, Antoine Pitrou wrote:
> On Mon, 27 Sep 2010 23:45:45 -0400
> Steve Holden<steve at holdenweb.com>  wrote:
>> On 9/27/2010 11:27 PM, Benjamin Peterson wrote:
>>> 2010/9/27 Meador Inge<meadori at gmail.com>:
>>>> which, as seen in the trace, is because the 'detect_encoding' function in
>>>> 'Lib/tokenize.py' searches for 'BOM_UTF8' (a 'bytes' object) in the string
>>>> to tokenize 'first' (a 'str' object).  It seems to me that strings should
>>>> still be able to be tokenized, but maybe I am missing something.
>>>> Is the implementation of 'detect_encoding' correct in how it attempts to
>>>> determine an encoding or should I open an issue for this?
>>> Tokenize only works on bytes. You can open a feature request if you desire.
>>>
>> Working only on bytes does seem rather perverse.
> I agree, the morality of bytes objects could have been better :)
>
The reason for working with bytes is that source data can only be 
correctly decoded to text once the encoding is known. The encoding is 
determined by reading the encoding cookie.

I certainly wouldn't be opposed to an API that accepts a string as well 
though.

All the best,

Michael

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Showing content from https://mail.python.org/pipermail/python-dev/2010-September/104211.html below:

[Python-Dev] issue2180 and using 'tokenize' with Python 3 'str's