ThinkRubyBuild/code/interlock.py at master · learnbyexample/ThinkRubyBuild · GitHub

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"""This module contains a code example related to

Think Python, 2nd Edition

by Allen Downey

http://thinkpython2.com

License: http://creativecommons.org/licenses/by/4.0/

"""

from __future__ import print_function, division

from inlist import make_word_list, in_bisect

def interlock(word_list, word):

"""Checks whether a word contains two interleaved words.

word_list: list of strings

word: string

"""

evens = word[::2]

odds = word[1::2]

return in_bisect(word_list, evens) and in_bisect(word_list, odds)

def interlock_general(word_list, word, n=3):

"""Checks whether a word contains n interleaved words.

word_list: list of strings

word: string

n: number of interleaved words

"""

for i in range(n):

inter = word[i::n]

if not in_bisect(word_list, inter):

return False

return True

if __name__ == '__main__':

word_list = make_word_list()

for word in word_list:

if interlock(word_list, word):

print(word, word[::2], word[1::2])

for word in word_list:

if interlock_general(word_list, word, 3):

print(word, word[0::3], word[1::3], word[2::3])

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