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Christian A. Castro
30,501 PointsThe num_teachers function should return an integer for how many teachers are in the dict. Any advice please!?
def num_teachers(a):
counter = 0
for key in len(a.keys()):
counter += 1
return counter
# 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(a):
counter = 0
for key in len(a.keys()):
counter += 1
return counter
1 Answer
Chris Freeman
Treehouse Moderator 68,423 PointsYour code, while not optimal, is very close. You don't need to take the len() of the teachers.keys(), just use the teachers.keys() directly.
As further improvements, the .keys() is assumed if omitted in a container context like if statements.
Also, the form
counter = 0
for x in container:
counter +=1
# can be replaced simply by
counter = len(container)
Christian A. Castro
30,501 PointsChristian A. Castro
30,501 PointsChris Freeman Thank you so much!! I'm very sorry for my late response.. thank you again!