Pattern Matching in Python

pattern_matching.py

with open("/usr/share/dict/words") as words:
    for word in map(str.rstrip, words):
        for letter in word:
            match letter:
                case "a" | "b" | "c" | "d" | "e" | "f":
                    continue
                case _:
                    break
        else:
            print(word)