Python zip ()

>>> Help (Zip) to built-in function zip in module __builtin__:zip (...)    Zip (seq1 [, SEQ2 [...]]), [(Seq1[0], seq2[0] ...), (...)        Return a list of tuples, where each tuple contains the i-th element from each of the    argument sequences.  The returned list is truncated in length to the length of the    shortest argument sequence.>>> list_1 = [' Name ' , ' age ']>>> list_2 = [' Wang ', 23]>>> zip (list_1, list_2) [(' Name ', ' Wang '), (' Age ', ') ']>>> dic T (Zip (list_1, list_2)) {' Age ': $, ' name ': ' Wang '}

If the two parameters are not the same length, then take the short one.

You can also reverse the operation, see below:

>>> list_3{' age ': + ' name ': ' Wang '}>>> list_1 = [' name ', ' age ']>>> list_2 = [' Wang ', 23]>& gt;> list_3 = Zip (list_1, list_2) >>> list_3[(' name ', ' Wang '), (' Age ', ') ']>>> l1, L2 = Zip (*list_3) &G t;>> list_1 = = List (L1) true>>> type (L1) <type ' tuple ' >>>> list_2 = l2false>>> List_2 = = List (L2) True

　

Naturally, you can also manipulate three or one of the parameters:

>>> Zip (list_1) [(' Name ',), (' Age ',)]>>> zip (list_1, list_2, L1) [(' Name ', ' Wang ', ' name '), (' age ', 23, ' Age ')]

　　

Python.org's explanation:

1. This function returns a list of tuples, where the  i -th tuple contains the  i -th element f Rom each of the argument sequences or iterables. The returned list is truncated in length to the length of the shortest argument sequence. When there is multiple arguments which is all of the same length, < Span class= "pre" >zip ()  is similar to map ()  with An initial argument of  none . With a single sequence argument, it returns a list of 1-tuples. With no arguments, it returns an empty list.

2. The left-to-right evaluation order of the iterables is guaranteed. This makes possible an idiom for clustering a data series into n-length groups using zip(*[iter(s)]*n) .

3.zip()In conjunction with the * operator can is used to unzip a list

Python zip ()