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Jing Zhou
2,162 PointsThe number of keys in a dictionary
Can someone tell me why my code doesn't work? Is it okay to use len(dictionary) to count the number of keys in a dictionary?
# 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(dictionary):
num_teacher = int(len(dictionary))
return num_teacher
2 Answers
Samuel Ferree
31,722 Pointslooks like a formatting issue, python cares about your spacing.
Also, I believe the cast to an int is not needed, Try this
def num_teachers(dictionary):
return len(dictionary)
Marzoog AlGhazwi
15,796 Pointscouldn't figure out the solution for the second step :( can anyone help me
# 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(dictionary):
return len(dictionary)
def num_courses(dictionary):