in Python find number of same elements in 2 lists

Posted by John on Stack Overflow See other posts from Stack Overflow or by John
Published on 2010-03-23T13:17:40Z Indexed on 2010/03/23 13:23 UTC
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python

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arrays

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array-intersect

Hi, In Python if I have 2 lists say:

l1 = ['a', 'b', 'c', 'd']
l2 = ['c', 'd', 'e']

is there a way to find out how many elements they have the same. In the case about it would be 2 (c and d)

I know I could just do a nested loop but is there not a built in function like in php with the array_intersect function

Thanks

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