Python Program to Iterate Through Two Lists in Parallel

Iterating a list means to traverse through all the elements of a list one by one, performing a certain operation on each element, and moving to the next element until all the elements have been processed.

Python Code : #

You can use the zip() function in Python to iterate through two lists in parallel. Here is an example program that demonstrates this:

list1 = [1, 2, 3]
list2 = ['a', 'b', 'c']

# Iterate through the two lists in parallel
for item1, item2 in zip(list1, list2):
    print(f'{item1} -> {item2}')

In this program, we first define two lists (list1 and list2). We then use the zip() function to iterate through the two lists in parallel. The zip() function returns an iterator that aggregates elements from each of the iterables (in this case, list1 and list2) and returns them as tuples.

We use a for loop to iterate through the tuples returned by the zip() function. Inside the loop, we use tuple unpacking to extract the items from each tuple and print them in a formatted string.

Note that if the two lists have different lengths, the zip() function will only iterate up to the length of the shortest list. If you want to iterate over the longest list and fill in missing values with a default value, you can use the itertools.zip_longest() function instead of zip().