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

Faisal Rana
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Faisal Rana
Python Web Development Techdegree Student 2,008 Points
Posted by Faisal Rana
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Faisal Rana
Python Web Development Techdegree Student 2,008 Points

Help me with this ! Can anybody tell me what is wrong with my code?

For this first task, create a function named num_teachers that takes a single argument, which will be a dictionary of Treehouse teachers and their courses.

The num_teachers function should return an integer for how many teachers are in the dict.

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(treehouse_teachers):
    treehouse_teachers = {'Andrew Chalkley': ['jQuery Basics', 'Node.js Basics'],'Kenneth Love': ['Python Basics', 'Python Collections']}
    for key in treehouse_teachers:
        key = [int(key)]
    return num_teachers

1 Answer

Jennifer Nordell
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STAFF
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Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
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Jennifer Nordell
Treehouse Teacher

Hi there, Faisal Rana ! I feel like you have fallen victim to the "over thinking things" monster that also sometimes pops up and gets me, too. So I'm going to leave a couple of hints here and see if we can get you there.

  • You do not need a loop
  • This step can be solved in one line of code
  • Did you know that you can get the len of a dictionary? :smiley:

I think you can get it with these hints, but let me know if you're still stuck! :sparkles: