unpick a list of lists in Python

Question

i have a list of 3 lists in Python

mylist = [[1, 2, 3], [10, 20, 30], [100, 200, 300]]

and i unpack using 3 lines of code

first= [m[0] for m in mylist]
second = [m[1] for m in mylist]
third = [m[2] for m in mylist]

I wish to find an efficient one line code for the same...

Answer 1

You can use zip:

first,second,third = zip(*[[1, 2, 3], [10, 20, 30], [100, 200, 300]])

In [10]: first
Out[10]: (1, 10, 100)

In [11]: second
Out[11]: (2, 20, 200)

In [12]: third
Out[12]: (3, 30, 300)