zip(*iterables)

Creates an tuple of all iterables items and return an iterator of the tuple.



In [65]:

    
list(zip())









    Out[65]:





[]



In [66]:

    
x = [1,2,3]
it = zip(x)
list(it)









    Out[66]:





[(1,), (2,), (3,)]



In [111]:

    
x = [1, 2, 3, 4, 5, 6]
y = ["a", "b", "c"]
it = zip(x,y) # Tuple length is always min of all input iterables. 
ls = list(it)
print(ls)









    



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

unzip

To unzip a list of tuples add *. If tuples have different lengths, the smallest is used for unzipping.



In [122]:

    
x, y = zip(*ls)
print(x)
print(y)









    



(1, 2, 3)
('a', 'b', 'c')



In [124]:

    
x = [(1,2, 4), (3,4)]
x, y = list(zip(*x))
print(x)
print(y)









    



(1, 3)
(2, 4)