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Brian Minkin
Courses Plus Student 795 Pointserror--not reading answer to task 2
This should find the correct answer, 4. What is wrong with your system?
my_dict = {'Andrew Chalkley': ['jQuery Basics', 'Node.js Basics'], 'Kenneth Love': ['Python Basics', 'Python Collections']}
def num_courses(dict):
values=list(my_dict.values())
val0 = values.pop(0)
val1 = values.pop(0)
return (len(val0) + len(val1))
num_courses(my_dict)
# The dictionary will look something like:
# {'Andrew Chalkley': ['jQuery Basics', 'Node.js Basics'],
# 'Kenneth Love': ['Python Basics', 'Python Collections']}
#
# Each key will be a Teacher and the value will be a list of courses.
#
# Your code goes below here.
my_dict = {'Andrew Chalkley': ['jQuery Basics', 'Node.js Basics'],
'Kenneth Love': ['Python Basics', 'Python Collections']}
def num_teachers(dict):
return (len(dict))
num_teachers(my_dict)
def num_courses(dict):
values=list(my_dict.values())
val0 = values.pop(0)
val1 = values.pop(0)
return (len(val0) + len(val1))
num_courses(my_dict)
2 Answers
gsav
3,800 PointsYou're going in a direction I wouldn't recommend. You want to count the length of each course list and add them up. You can access the course lists using the dict.values() method and iterating through the values.
def num_courses(dict_arg):
counter = 0
for value in dict_arg.values():
counter += len(value)
return counter
gsav
3,800 PointsI got the correct value & passed with my code. Not sure why yours isn't passing.
Brian Minkin
Courses Plus Student 795 PointsBrian Minkin
Courses Plus Student 795 PointsThanks for your reply but the problem here is that you get a value of 2 when the task is seeking an answer of 4--the total of all the courses. I have tried iterating through the values previously and always got hung up with 2 which is why i thought to get from a list of lists to individual lists. The other thing I considered was trying to flatten the lists to one single list, but trying to figure out how to do this. At any rate, my method does return 4, so i don't understand why it was not accepted. There was no constraint that was to be put upon us for method o get the correct answer