1def get_word_size(word):
 2    try:
 3        word_length = len(word)
 4        return word_length
 5    except TypeError:
 6        return 
 7    
 8
 9def beginning(word):
10    word_length = get_word_size(word)
11    if word_length:
12        split = int(word_length / 3)
13        if word_length % 3 == 0 or word_length % 3 == 1:
14            return word[0:split]
15        else:
16            return word[0:split+1]
17
18
19def middle(word):
20    word_length = get_word_size(word)
21    if word_length:
22        split = int(word_length / 3)
23        if word_length % 3 == 0:
24            return word[split:split*2]
25        elif word_length % 3 == 1:
26            return word[split:split*2+1]
27        else:
28            return word[split+1:split*2+1]
29
30
31def end(word):
32    word_length = get_word_size(word)
33    if word_length:
34        split = int(word_length / 3)
35        if word_length % 3 == 0:
36            return word[split*2:]
37        else:
38            return word[split*2+1:]
39    
40
41def split_sentence(sentence):
42    list_sentence = []
43    sentence = sentence.split()
44    for i in sentence:
45        list_sentence.append((beginning(i), middle(i), end(i)))
46    return list_sentence