crc <[EMAIL PROTECTED]> writes:
> I assume your talking about building a new dictionary with the key and
> value pair switched. I have seen no built in function to do this but I
> have found a way to create another dictionary that is the inverse of
> the first.
Note that you can't reliable "reverse" a dictionary. That's because
you can put anything in a dictionary, but some things can't be used as
keys to a dictionary.
> when your redy to build a revers dictionary you semply do the folowing
> b={}
> for x in a:
> temp_idx=a[x]
> b[temp_idx]=x
You can do it with a single list comprehension:
b = dict([(x, y) for y, x in a.iteritems()])
<mike
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