Course Enrolment

catalogueFile = ["CS1P,20,Monday,14,Monday,15,Wednesday,12,Friday,12",
"CS1Q,20,Tuesday,12,Wednesday,15,Wednesday,16,Thursday,12",
"Maths,40,Monday,11,Tuesday,11,Wednesday,11,Thursday,11,Friday,11"]

def loadCourseCatalogue(file):
  dictionary = {}
  for line in file:
    line = line.split(",")
    dictionary[line[0]] = (int(line[1]), list((line[x],int(line[x+1])) for x in range(2,len(line),2)))
  return dictionary
catalogue = loadCourseCatalogue(catalogueFile)
# print(catalogue)

def clash(a,b):
  result = False
  for timeA in catalogue[a][1]:
    for timeB in catalogue[b][1]:
      if timeA == timeB:
        result = True
  return result
# print(clash("CS1Q","Maths"))

def chooseCourses():

  userInput = None
  credits = 0
  enrolledList = []

  while userInput == None:
    while credits < 80:
      userInput = input("Please enter course name: ")

      if userInput not in catalogue.keys():
        print("The course name does not exist in the course catalogue.")
        userInput = None
      else:

        if userInput in enrolledList:
          print("You have already enrolled for this course.")
          userInput = None
        else:

          for enrolledCourse in enrolledList:
            if clash(userInput,enrolledCourse) == True:
              print("You cannot enrol for this course because of a timetable clash with one of your other courses.")
              userInput = None

          enrolledList.append(userInput)
          credits += catalogue[userInput][0]
          print("You have successfully enrolled for this course.")
          print("Current credits: " + str(credits))
          userInput = None

    else:
      userInput = True

      timetable = {"Monday":[], "Tuesday":[], "Wednesday":[], "Thursday":[], "Friday":[]}
      for enrolledCourse in enrolledList:
        for time in catalogue[enrolledCourse][1]:
          timetable[time[0]].append((time[1], enrolledCourse))
      for day, times in timetable.items():
        print(day)
        for time in sorted(times):
          print(str(time[0])+": "+time[1])



chooseCourses()