[Tutor] name shortening in a csv module output

[Steven D'Aprano]

On Fri, Apr 24, 2015 at 04:34:19PM -0700, Jim Mooney wrote:

> I was looking things up and although there are aliases for utf_8 (utf8 and
> utf-8) I see no aliases for utf_8_sig, so I'm surprised the utf-8-sig I
> tried using, worked at all. Actually, I was trying to find the file where
> the aliases are so I could change it and have utf_8_sig called up when I
> used utf8, but it appears to be hard-coded.

I believe that Python's codecs system automatically normalises the 
encoding name by removing spaces, dashes and underscores, but I'm afraid 
that either I don't understand how it works or it is buggy:

py> 'Hello'.encode('utf___---___  -- ___8')  # Works.
b'Hello'

py> 'Hello'.encode('ut-f8')  # Fails.
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
LookupError: unknown encoding: ut-f8


-- 
Steve