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

Natalia Henderson
Natalia Henderson
5,190 Points
Posted by Natalia Henderson
Natalia Henderson
5,190 Points

Code Challenge: Teacher Stats

Hi, I don't know what I did wrong here, thanks for your help.

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_teacher(dict): print(dict.keys().len())

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_teacher(dict):
    print(dict.keys().len())

1 Answer

Oskar Lundberg
Oskar Lundberg
9,534 Points
Oskar Lundberg
Oskar Lundberg
9,534 Points

You have only done a small mistake. Just need to do len(dict.keys()) instead of dict.keys().len() If you do it like this, it will work. In the challenge, you should also return the answer, not print it :D

def num_teacher(dict):
    return len(dict.keys())
Natalia Henderson
Natalia Henderson
5,190 Points
Natalia Henderson
Natalia Henderson
5,190 Points

Thank you so much! This really helped