Understanding - Intermediate, exercise 6

Text

The variable my_nine_char contains nine characters (e.g. "johnradoe"). Study the execution of the following function when it is called as follows: f(my_nine_char).

from collections import deque


def f(nine_char):
    result = list()
    d = {0: list(), 1: list(), 2: list()}
    b = deque()
    idx = 0

    for c in nine_char:
        if c in ("a", "e", "i", "o", "u"):
            b.append("0")
        else:
            b.append("1")

    while len(b) != 0:
        idx = idx + 1
        for i in range(len(nine_char) // 3):
            d[i].append(b.pop())

    for i in range(idx):
        result.extend(d[i])

    return result

Hints

The function f creates a new data structure obtained by processing the characters specified as input.

Additional material

The runnable Python file is available online. You can run it executing the command python exercise_6.py in a shell, and then following the instructions on screen to specify the intended input.