The university defines freshman, sophomore, junior, and senior standing based on the number of units completed by students. The following function was written to return appropriate class standing for a given student based on the units earned:

def class_standing(units):
if units >= 30:
return "Sophomore"
if units <= 30:
return "Freshman"
if units >=90:
return "Senior"
if units <=90:
return "Junior"

Freshman: [0, 29]

Sophomore: [30 - 59]

Junior: [60 - 89]

Senior: 90+.

Fill-in the blanks based on the above function. Note: Ad edge case is a test case on the edge of a condition, for example, if testing if a value is in the range -100 to 100 inclusive, -100 and 100 would be edge cases, 50 and 500 would be non-edge cases.

Provide a call to the class_standing function to test an edge case for Freshman:



What would the class_standing function return for this case?

Provide a call to the class_standing function to test a non-edge case for Sophomore:



What would the class_standing function return for this case?

Provide a call to the class_standing function to test an edge case for Junior:



What would the class_standing function return for this case?

Provide a call to the class_standing function to test a non-edge case for Senior:



What would the class_standing function return for this case?

2-Define a function total_seconds(time) that takes a string in the format of "hh:mm:ss" or "mm:ss" and returns the total number of seconds in the time. You may assume only valid time strings will be passed to the function.
For example,
total_seconds("01:01:01") returns 3661
total_seconds("10:30") returns 630