how to go trough all lists in one list code example

Example 1: list comp loop through list certain amount of times

data_subset = [car_data[i] for i in range(1000)]
#List comp, that loops through a certain list (car_data)
#in range of a 1000 times

Example 2: multiple values in python loop for x,y

for x, y in zip(a, b):
    print x, y