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Python Python Collections (2016, retired 2019) Dictionaries Teacher Stats

Chang Hyeon Lee
Chang Hyeon Lee
2,008 Points
Posted by Chang Hyeon Lee
Chang Hyeon Lee
2,008 Points

I need some help

I have no idea with that

teachers.py 
# 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.
def num_teachers(teachers):
    return len(teachers.keys())
Umesh Ravji
Umesh Ravji
42,386 Points
Umesh Ravji
Umesh Ravji
42,386 Points

Hi Chang, is it the secound part of the challenge that you are having problems with?

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,441 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

Then second task asks Create a new function named num_courses that will receive the same dictionary as its only argument. The function should return the total number of courses for all of the teachers.

Here are the steps.

  • Define a function num_courses similar to how num_teachers was created. In this function:
  • Define a variable to hold the count and set to zero
  • Loop over the keys in the provided dictionary
  • for each key in the dictionary, add the course count (hint: the length) to the count variable
  • After looping, return the resultant count

Post back if you need more help