Python

This question practices the use of a list method. Assign to the variable grades (25pts) 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. 4. This question practices list membership, list indexes and list slices. (25pts) a. Write a Python statement that creates a list named dog_brefds that contains the elements 'collic', '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