How do I access the 1st element of each list in a lists of lists

Example:

numbers = ['1','2','3']
letters = ['a','b','c']

I want to get [1,a] as a results. Yeah I can loop through it, but I'm wondering if there is a fast one line way of doing this.

EDIT EDIT !!!!

I made a horrible mistake in describing the problem.

I have acce开发者_如何学Pythonss to the combined list (the list of lists of the question):

list_of_lists = [ numbers, letters]

which is equal to:

[ ['1','2','3'],['a','b','c']]

Sorry for the confusion. The end result is still the same, this would be ['1','a'].

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Try a list comprehension:

# (numbers, letters) can be replaced with `list_of_lists` 
>>> [ x[0] for x in (numbers, letters) ] 
['1', 'a']

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import operator
map(operator.itemgetter(0), [numbers, letters])

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list_of_lists = [['1', '2', '3'], ['a', 'b', 'c']]
list_of_firsts = [l[0] for l in list_of_lists]

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You may be looking for zip

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I would try:

zip(*list_of_lists)[0]