dicts2.ipynb

Kernel: Python 3 (Anaconda 5)

Puzzler

In this exercise we're going to try to solve the Car Talk Puzzler given below (Exercise 6).

http://greenteapress.com/thinkpython2/html/thinkpython2012.html#sec139

I've loaded the pronunciation dictionary into this directory. Below you'll find the read_dictionary function and a couple of examples for its use.

def read_dictionary(filename='cmudict.0.6d.txt'):
    """Reads from a file and builds a dictionary that maps from
    each word to a string that describes its primary pronunciation.

    Secondary pronunciations are added to the dictionary with
    a number, in parentheses, at the end of the key, so the
    key for the second pronunciation of "abdominal" is "abdominal(2)".

    filename: string
    returns: map from string to pronunciation
    """
    d = dict()
    fin = open(filename)
    for line in fin:

        # skip over the comments
        if line[0] == '#': continue

        t = line.split()
        word = t[0].lower()
        pron = ' '.join(t[1:])
        d[word] = pron

    return d

pron = read_dictionary()

for word in pron:
    wo_1st_letter = word[1:]
    wo_2nd_letter = word[0]+word[2:]
    pronunciation = pron[word]
    if wo_1st_letter not in pron or wo_2nd_letter not in pron:
        continue
    if len(word) != 5:
        continue
    pron_wo_1st = pron[wo_1st_letter]
    pron_wo_2nd = pron[wo_2nd_letter]
    if pronunciation == pron_wo_1st == pron_wo_2nd :
        print(word)

aaron
eerie
llama
llana
llano
lloyd
ooohs
scent

pron["vomit"]

'V AA1 M AH0 T'

word = "crow"
## array slice!!!

word = "antidisestablishmentarianism"
word[1:]

'ntidisestablishmentarianism'

word[0] + word[2:]

'atidisestablishmentarianism'

word = "wrack"
pron[word] == pron[word[1:]]

True