one more thing Re: Enumming

[Ken Kinder]

One more thing. In cases where it's coming in from a database or a file, or
something, I usually like to make a mapping in the form of a dictionary

    imagetypes = {
        'GIF':1,
        'JPEG':2
    }

and the mapping changes as your schema changes. Sometimes a reverse-table is
also nice. Making those is easy.

    reverse_imagetypes
    for key in imagetypes.keys():
        value = imagetypes[key]
        reverse_imagetypes[value] = key

Larry Whitley wrote:

> I come to Python from C++ and am wondering how Pythoners do the equivalent
> of the C++ enum.  My current approach is to have an enum class with some
> constants in it for use with my regular class.  It there something more
> clever that I've missed?
>
> Let's say I have a list of tuples like so:
>
> myList = []
> for i in range( 10 ):
>     myList.append( functionA(), funcationB(), functionC(), functionD(),
> functionE() )
>
> Here's my class of enums:
>
> class E:
>     a,b,c,d,e = range( 5 )
>
> Later, I use the enums to access my list:
>
> myC = myList[5][ E.c]
>
> Is this the usual approach?
>
> Larry
>
> --
> http://www.python.org/mailman/listinfo/python-list

--
Ken Kinder
Staff Engineer - Tridog Interactive, Inc.
kkinder at tridog.com
http://www.tridog.com/ - 303-415-2538


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