RegexSubstitution.py

"""
Title     : Regex Substitution
Subdomain : Regex and Parsing
Domain    : Python
Author    : Ahmedur Rahman Shovon
Created   : 15 July 2016
Problem   : https://www.hackerrank.com/challenges/re-sub-regex-substitution/problem
"""
import re
import sys

n = int(input())
for line in sys.stdin:
    remove_and = re.sub(r"(?<= )(&&)(?= )", "and", line)
    remove_or = re.sub(r"(?<= )(\|\|)(?= )", "or", remove_and)
    print(remove_or, end="")