Typoglycemia - Dailyprogrammers [2015-11-09] Challenge #240 [Easy]

dlyprgrmr240e.py

import random
import re
import sys

def get_text(file):
    return file.read()

def scramble(word):
    return \
    ('' if len(word) == 0 else word[0]) + \
    ('' if len(word) <= 2 else ''.join(random.sample(word[1:-1], len(word) - 2))) + \
    ('' if len(word) <= 1 else word[-1])

def scramble_words(text):
    ptrn = re.compile(r"(\w+'?\w*)|(\W+)")
    for chunk in ptrn.findall(text):
        if chunk[1] == '': # It's a word
            yield scramble(chunk[0])
        else:
            yield chunk[1]

def main():
    text = get_text(sys.stdin)
    for chunk in scramble_words(text):
        sys.stdout.write(chunk)

if __name__ == '__main__':
    main()