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Matt Rule
1,928 PointsTeacher Stats Question
Have the attached code.
Getting the following TypeError: unhashable type: list
Any thoughts? I assume its a simple fix.
def most_courses(teachers_courses):
lng=0
tc="no teacher"
for teacher in teachers_courses:
if len(teachers_courses[teacher])>lng:
lng=len(teachers_courses[teacher])
tc=teacher
return tc
def courses(teachers_courses):
lst=[]
for value in teachers_courses.values():
lst.extend(value)
return lst
def num_teachers(teachers_courses):
num=0
for key in teachers_courses:
num+=1
return num
def num_courses(teachers_courses):
num=0
for value in teachers_courses.values():
num+=len(value)
return num
def stats(teachers_courses):
lst=[]
for teacher in teachers_courses.items():
lst.append([teacher,len(teachers_courses[teacher])])
return lst
1 Answer
Stuart Wright
41,119 PointsWhen iterating through dictionary items, you should have two different variables for key and value. You can call these whatever you want but k and v is common.
for k, v in teachers_courses.items():
lst.append([k, len(v)])