A fun little tool that, given suffixes and a wordlist, prints words that end in those suffixes

suffix.py

#!/usr/bin/env python
import sys

def to_set(collection):
    return "{" + ",".join(collection) + "}"

suffixes = {}
for suffix in sys.argv[1:-1]:
    suffixes[suffix] = set()

filename = sys.argv[-1]
with open(filename, 'r') as wordlist:
    for line in wordlist:
        word = line.strip()
        for suffix, set in suffixes.iteritems():
            if word.endswith(suffix):
                prefix = word[:-len(suffix)]
                if prefix:
                    set.add(prefix)

prefixes = None
for set in suffixes.itervalues():
    if prefixes is None:
        prefixes = set
    else:
        prefixes &= set

print to_set(prefixes) + to_set(suffixes.keys())