WAP that takes two lists and return true if they have atleast one common member.

Sure, here is a Python program that takes two lists as input and returns True if they have at least one common member.

def common_member(list1, list2):
    # Use set() to remove duplicates from lists
    set1 = set(list1)
    set2 = set(list2)

    # Use & operator to find common elements in sets
    if set1 & set2:
        return True
    else:
        return False

# Test the function
list1 = [1, 2, 3, 4, 5]
list2 = [5, 6, 7, 8, 9]
print(common_member(list1, list2))  # Output: True

list3 = [1, 2, 3]
list4 = [4, 5, 6]
print(common_member(list3, list4))  # Output: False

In this program, the function common_member takes two lists as arguments. It converts the lists to sets using the set() function, which removes any duplicate elements. Then it uses the & operator to find the intersection of the two sets, i.e., the common elements. If there are any common elements, it returns True; otherwise, it returns False.