#!/usr/bin/env python3

import re

import sys

def check_words(string=None):

"""

Check your input string for specific words

such as "Britain", "Ireland", "Wales", "Scotland"

"""

if string is None:

print("We need a string to work on.")

sys.exit(-1)

else:

# IMPORTANT: DO NOT PUT SPACES IN BETWEEN PIPES

# ie. DO NOT use re.compile("Britain | Ireland | Wales | Scotland")

british_isles_regex = re.compile("Britain|Ireland|Wales|Scotland")

search_output = british_isles_regex.search(string)

try:

if search_output.group():

print("\n - Your input contains {}".format(search_output.group()))

except AttributeError:

print("\n - Your input does not match the pattern.")

check_words("I am calling from Ireland")

check_words("I am not here")