40.two list common element.py

# Python program to check
# if two lists have at-least
# one element common
# using traversal of list

def common_data(list1, list2):
    result = False

    # traverse in the 1st list
    for x in list1:

        # traverse in the 2nd list
        for y in list2:

            # if one common
            if x == y:
                result = True
                return result

    return result

# driver code
a = [1, 2, 3, 4, 5]
b = [5, 6, 7, 8, 9]
print(common_data(a, b))

a = [1, 2, 3, 4, 5]
b = [6, 7, 8, 9]
print(common_data(a, b))