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

Posted by Elijah Newell
Elijah Newell
3,355 Points

I have trouble starting challenges like this, can someone please help quickly?

I just need help getting started.

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():

2 Answers

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,457 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,457 Points

The argument passed in will be a dict will looking something like:

{'Andrew Chalkley': ['jQuery Basics', 'Node.js Basics'],
'Kenneth Love': ['Python Basics', 'Python Collections']}

Let’s call the argument teachers.

  • To get a list of teacher (the dict keys), you could use teachers.keys()
  • the number of teachers would be len(teachers.keys()) or len(teachers) since without a method, it is assumed you are referring to the dict keys.

Post back if you need more help. Good luck!!!

Elijah Newell
Elijah Newell
3,355 Points
Elijah Newell
Elijah Newell
3,355 Points

I solved it! Thanks Chris, really appreciate it!