[Tutor] map & lambda to create dictionary from lists?

[Reisfeld, Brad CAR]

Hi,
My preferred method for accomplishing this is quite simple:

>>> d={}
>>> keys = ('name', 'age', 'food')
>>> values = ('Monty', 42, 'spam')
>>> map(d.setdefault, keys, values)
['Monty', 42, 'spam']
>>> d
{'name': 'Monty', 'age': 42, 'food': 'spam'}


-Brad

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What I've got are two sequences.  The first is a sequence of strings
that I want to use as the keys of a dictionary.  The second is a
sequence of objects (strings, numbers, whatever) that I want to use as
the values in the dictionary.  Of course, the two sequences have a
one-to-one correspondence.

Here's what I've come up with using map and lambda so far and I want to
know if it's Good:

    Python 2.0 (#1, Jan  8 2001, 10:18:58) 
    [GCC egcs-2.91.66 19990314 (egcs-1.1.2 release)] on sunos5
    Type "copyright", "credits" or "license" for more information.
    >>> d = {}
    >>> keys = ('name', 'age', 'food')
    >>> values = ('Monty', 42, 'spam')
    >>> junk = map(lambda k, v: d.update({k: v}), keys, values)
    >>> junk
    [None, None, None]
    >>> d
    {'name': 'Monty', 'age': 42, 'food': 'spam'}