Solution to the "what is the longest word you can write with 7 segments displays" problem from Tom Scott's video

longest-7segments-word.py

import sys, re
# first argument: the words file
# second argument: the banned characters

wordsfile = sys.argv[1]
banned = sys.argv[2]

# print("words file: " + wordsfile)
# print("banned: " + banned)
# print("")

with open(wordsfile) as f:
	lines = [line.rstrip('\n') for line in f.readlines()]

p = re.compile('[^'+banned+']*',re.IGNORECASE)
not_banned = list(filter(lambda x: p.fullmatch(x), lines))

mlen = max(map(len,not_banned))

result = [w for w in not_banned if len(w) == mlen]

for w in result:
	print(w)