How to add values to existing dictionary key Python

Question

I am trying to create a function that takes in four parameters: A keyname, start time, end time, and then a dictionary. I have to create a tuple out of the start time and end ti

Answer 1

Try this:

def insertIntoDataStruct(name,startTime,endTime,aDict):
    if not name in aDict:
        aDict[name] = [(startTime,endTime)]
    else:
        aDict[name].append((startTime,endTime))

Now define your dict:

courses = {}

and start adding the courses:

insertIntoDataStruct("CS 2316", "1505", "1555", courses)
insertIntoDataStruct("CS 2316", "1405", "1455", courses)
insertIntoDataStruct("CS 2316", "1305", "1355", courses)
insertIntoDataStruct("CS 4400", "1405", "1455", courses)
insertIntoDataStruct("CS 4400", "1605", "1655", courses)