Lab 4.02 - Getting Loopy

Part 1

Write a function fruit_pluralizer. It will take in a list of fruit and return nothing. The function should update the values of the list so that the values are plural. If the fruit name ends in a 'y' remove the 'y' and add 'ies', otherwise add an 's'.

  1. Create the function contract for fruit_pluralizer.
  2. Provide a few examples that confirm fruit_pluralizer works as expected:
    • Include examples with 'berry'
    • What if the list is empty?
    • What if the fruit ends in 's'?

Example

# contract goes here
def fruit_pluralizer(list_of_strings): 
    # your code goes here
fruit_list = ['apple', 'berry', 'melon']
print("Single Fruit: " + str(fruit_list))
fruit_pluralizer(fruit_list)
print("No longer single Fruit: " + str(fruit_list))
# examples go here

Running the code: 

>>> python3 fruit_pluralizer_lab.py
Single Fruit: ['apple', 'berry', 'melon']
No longer single Fruit: ['apples', 'berries', 'melons']

Hint

Remember that you can index into the string and get the length of a string. Use that to get the last letter of each word.

Part 2

Create a function my_reverse, which will return a reversed string.

  1. Create the function contract for my_reverse.
  2. Provide a few examples to confirm that my_reverse works:
    • An empty string
    • A string of even length
    • A string of odd length greater than 1
    • A string of length 1

Example

# contract goes here
def my_reverse(string_to_reverse): 
    # your code goes here
reversed = my_reverse("apples")
print(reversed)
# examples go here

Running the code: 

>>> python3 my_reverse_lab.py
selppa

Hint

To get the last element:(len(my_list) -1) - 0

To get the second to last element: (len(my_list)-1 ) - 1

To get the third to last element: (len(my_list)-1) - 2

Bonus!

Create a function reverse_strings_in_list. This function will input a list of strings you want to reverse. The function will reverse the strings in the list by calling the my_reverse function in a loop.