Django: Meaning of leading underscore in list of tuples used to define choice fields?

Posted by User on Stack Overflow See other posts from Stack Overflow or by User
Published on 2010-06-03T08:12:54Z Indexed on 2010/06/03 8:24 UTC
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Filed under:

python

|

django

|

internationalization

|

tuples

|

underscore

I've seen a few examples defining choice fields like so:

COUNTRIES = (
    ('fr', _('France')),
    ('de', _('Germany')),
    ...
)

(source: http://code.djangoproject.com/ticket/5446 Also see: http://djangosnippets.org/snippets/494/)

What is the meaning of the leading underscores? And why is the second value in the tuple even parenthesized?

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