challenge_2.py

"""
Write a function called is_palindrome which will check if
a given string is a palindrome. (Palindrome are the words/phrases that read the same both ways)
example :
kayak - kayak: Should Return True
lemon - nomel: Should Return False
"""


"""
Write a function called calc_average, which will
accept an unknown amount of numbers and it will 
return their average
"""

Alt:

Write a function named 'merge_lists' that will accept an unknown number of lists
and return a single list containing all elements from the input lists.

For example:
merge_lists([1, 2, 3], [4, 5], [6], [7, 8, 9]) should return [1, 2, 3, 4, 5, 6, 7, 8, 9]