Which English word is most similar to "covfefe"?

covfefe.py

#!/usr/bin/env python
# What's the nearest word (in Levenshtein distance) to "covfefe"?

import string

# Available from: https://github.com/kylebgorman/EditTransducer
import edit_transducer

# You probably have this file if you're on Linux or Mac OS X.
with open("/usr/share/dict/words") as source:
    lexicon = [line.rstrip() for line in source]

# By limiting it to ASCII letters we'll throw out "'s" words, etc.
la = edit_transducer.LevenshteinAutomaton(string.ascii_letters, lexicon)
print(la.closest_match("covfefe"))