Is there a python builtin to create tuples from multiple lists?

Question

Is there a python builtin that does the same as tupler for a set of lists, or something similar:

def tupler(arg1, *args):
    length = min([len(arg1)]+[len(x) for x in args])
    out = []
    for i in range(length):
        out.append(tuple([x[i] for x in [arg1]+args]))
    return out

so, for example:

tupler([1,2,3,4],[5,6,7])

returns:

[(1,5),(2,6),(3,7)]

or perhaps there is proper pythony way of doing this, or is there a generator similar???

Answer 1

I think you're looking for zip():

>>> zip([1,2,3,4],[5,6,7])
[(1, 5), (2, 6), (3, 7)]

Answer 2

have a look at the built-in zip function http://docs.python.org/library/functions.html#zip

it can also handle more than two lists, say n, and then creates n-tuples.

>>> zip([1,2,3,4], [5,6,7,8], [9,10,11,12], [13,14])
 [(1, 5, 9, 13), (2, 6, 10, 14)]