23_file_overlap.py

# 23 File Overlap
# Author: Christian Million
# Started: 2020-08-18
# Completed: 2020-08-18
# Last Modified: 2020-08-18
#
# Prompt: https://www.practicepython.org/exercise/2014/12/14/23-file-overlap.html
#
# Given two .txt files that have lists of numbers in them, find the numbers that are overlapping.
# One .txt file has a list of all prime numbers under 1000, and the other .txt file has a list of happy numbers up to 1000.
#
# (If you forgot, prime numbers are numbers that can’t be divided by any other number.
# And yes, happy numbers are a real thing in mathematics - you can look it up on Wikipedia. The explanation is easier with an example, which I will describe below.)