1"""
 2This is a solution to homework 1 from the Introduction to Python course 
 3at FMI by Nikolay Nikolaev.
 4"""
 5
 6def beginning(word):
 7    """Get the first part of a word."""
 8    beg_ind = int(len(word)/3)
 9    if len(word) % 3 == 2:
10        beg_ind += 1
11    return word[:beg_ind]
12
13def middle(word):
14    """Get the middle part of a word."""
15    start_ind = int(len(word)/3)
16    fin_ind = 2 * start_ind
17    if len(word) % 3 == 1:
18        fin_ind += 1
19    elif len(word) % 3 == 2:
20        start_ind += 1
21        fin_ind = 2*start_ind - 1
22    return word[start_ind:fin_ind]
23
24def end(word):
25    """Get the last part of a word."""
26    length = len(word)
27    end_ind = 2 * int(length/3)
28    if len(word) % 3 == 1:
29        end_ind += 1
30    elif len(word) % 3 == 2:
31        end_ind += 1
32    return word[end_ind:]
33
34def split_sentence(sentence):
35    """
36    Splits the words in a sentence into their three parts and returns 
37    them in a list as tuples.
38    """
39    result = []
40    for word in sentence.split():
41        result.append((beginning(word), middle(word), end(word)))
42    return result