nested_f01.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Sun Jun 24 10:20:56 2018

In this exercise, you will complete the definition of the inner function
 inner_echo() and then call echo() a couple of times, each with a different
 argument. Complete the exercise and see what the output will be!

@author: Shariful
"""

# Define echo
def echo(n):
    """Return the inner_echo function."""

    # Define inner_echo
    def inner_echo(word1):
        """Concatenate n copies of word1."""
        echo_word = word1 * n
        return echo_word

    # Return inner_echo
    return inner_echo

# Call echo: twice
twice = echo(2)

# Call echo: thrice
thrice = echo(3)

# Call twice() and thrice() then print
print(twice('hello'), thrice('hello'))