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Python Python Collections (Retired) Dictionaries Teacher Stats

Posted by indraneel
indraneel
2,211 Points

Course Python Collections

Hi, I am facing some difficulty in getting a single list of all courses thought by all teachers. Given below is my code (function)

def courses(arg1): course_list = [] for value in arg1: for courses in value: course_list.extend(courses)

return course_list

Output: You returned 69 courses

teachers.py 
# The dictionary will be something like:
# {'Jason Seifer': ['Ruby Foundations', 'Ruby on Rails Forms', 'Technology Foundations'],
#  'Kenneth Love': ['Python Basics', 'Python Collections']}
#
# Often, it's a good idea to hold onto a max_count variable.
# Update it when you find a teacher with more classes than
# the current count. Better hold onto the teacher name somewhere
# too!
#
# Your code goes below here.
def courses(arg1):
    course_list = []
    for value in arg1: 
        for courses in value:
            course_list.extend(courses)

    return course_list    
def stats(arg1): 
    list_teachers = []
    for key, value in arg1.items():
        list_teachers.append([key, len(value)])
    return list_teachers    

def num_teachers(arg1): 
    number_of_teachers = 0
    for key in arg1:
       number_of_teachers += 1
    return number_of_teachers

def most_classes(arg1): 
    max_classes = 0
    for key, value in arg1.items(): 
        if len(value) > max_classes:
            max_classes = len(value)
            teacher = key
    return teacher

2 Answers

Aby Abraham
PLUS
Aby Abraham
Courses Plus Student 12,531 Points
Aby Abraham
Aby Abraham
Courses Plus Student 12,531 Points 
def most_classes(dict):
    max_count = 0
    str = ""
    alist = dict.values()
    for key, value in dict.items():
        if len(value) > max_count:
            max_count = len(value)
            str = key
    return str


def num_teachers(dict):
    return len(dict.keys()) 


def stats(dict):
    slist = []
    for key, value in dict.items():
        slist.append([key, len(value)])
    return slist


def courses(dict):
    clist = []
    for value in dict.values():
        clist.extend(value)
    return clist
Steven Parker
Steven Parker
230,995 Points
Steven Parker
Steven Parker
230,995 Points

:point_right: If you want only the values from a dictionary, you can use the .values() method.

    for value in arg1.values():