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

Posted by Mohammed Ismail
Mohammed Ismail
7,190 Points

stats

Hi Team,

I have two list. One with teachers name and other with counts of courses. Now I need to form a new list with pair of teachers name and courses counts list in it.

This is code. I need to add additional lines to it.

Final answer should be [["Kenneth", 2],["James",3]]

teachers_dict = {"Kenneth": ["Flask","Django"],"James": ["BD","Java","Dotnet"]} def stats(teachers_dict): t_j=[] t_c=[] t_t=[] for x in teachers_dict.keys(): t_j.append(x) print(t_j) for y in teachers_dict.values(): for z in y: t_c.append(z) t_t.append(len(t_c)) print(t_t) t_k=[] # Wrong code for x in t_j: t_k.append(x) for y in t_t: t_k.append(y) print(t_k) return t_k# stats(teachers_dict)

Please help. Thanks!

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(teachers_dict):
    count = 0
    for x in teachers_dict.keys():
        count+=1
    return count
def num_courses(teachers_dict):
    count_c=[]
    for courses_c in teachers_dict.values():
        for x in courses_c:
            count_c.append(x)
    return len(count_c)
def courses(teachers_dict):
    count_c=[]
    for courses_c in teachers_dict.values():
        for x in courses_c:
            count_c.append(x)
    return count_c
def most_courses(teachers_dict):
    most_course= 0
    for k,v in teachers_dict.items():
        #for value in teachers_dict.values():
        if len(v)> most_course:
            most_course=len(v)
            teacher = str(k)
    return teacher

1 Answer

Jeff Muday
MOD
Jeff Muday
Treehouse Moderator 28,720 Points
Jeff Muday
Jeff Muday
Treehouse Moderator 28,720 Points

This is how you solve the stats portion.

def stats(teacher_dict):
    stats_list = []
    for teacher_name, teacher_courses in teacher_dict.items():
        stats_list.append([teacher_name, len(teacher_courses)])
    return stats_list
Mohammed Ismail
Mohammed Ismail
7,190 Points

Thanks Jeff Muday! Finally I completed the challenge!