Example 1: Using zip (Python 3+)
list_1 = [1, 2, 3, 4] list_2 = ['a', 'b', 'c'] for i, j in zip(list_1, list_2): print(i, j) Output
1 a 2 b 3 c
Using zip() method, you can iterate through two lists parallel as shown above.
The loop runs until the shorter list stops (unless other conditions are passed).
Example 2: Using itertools (Python 2+)
import itertools list_1 = [1, 2, 3, 4] list_2 = ['a', 'b', 'c'] # loop until the short loop stops for i,j in zip(list_1,list_2): print(i,j) print("\n") # loop until the longer list stops for i,j in itertools.zip_longest(list_1,list_2): print(i,j) Output
1 a 2 b 3 c 1 a 2 b 3 c 4 None
Using the zip_longest() method of itertools module, you can iterate through two parallel lists at the same time. The method lets the loop run until the longest list stops.
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