In the Python editor IDLE, create and save a Python file that is named, if your name is Harry Houdini, for example, HW2_HarryHoudini.py and begins with a comment containing your name, class and section, the posting date and number of the homework assignment. Use either a block comment or one-line comment style. Example: """ Harry Houdini CS 100 2018S Section 004 HW 02, January 24, 2018 """ or # Harry Houdini # CS 100 2018S Section 004 # HW 02, January 24, 2018 1. This question practices the use of a list method. Assign to the variable grades a list of 10 letter grades from among 'A', 'B', 'C', 'D', and 'F'. For example: grades = ['A', 'F', 'C', 'F', 'A', 'B', 'A', 'C', 'A', 'B'] Write a Python expression that creates a list named frequency, in which the elements are the number of times each of the letters A, B, C, D and F appear in grades. For example, for the above value of grades, the following would be correct output: frequency = [4, 2, 2, 0, 2] Your expression must give the correct values for any list of grades, not just the one in your list. Hint: use the list method count. 2. This question practices list membership, list indexes and list slices.

a. Write a Python statement that creates a list named dog_breeds that contains the elements 'collie', 'sheepdog', 'Chow', and 'Chihuahua' in the order given. b. Write a Python statement that uses list slicing to create a list herding_dogs that is made up of the first two elements of dog_breeds. c. Write a Python statement that uses list indexing to create a list tiny_dogs that is made up of the last element of dog_breeds. d. Write a Python statement that tests whether 'Persian' is in the list dog_breeds and prints either True or False depending on the answer.