Why does the challenge return bummer Try Again? It worked in workspaces.

# The dictionary will look something like:
# {'Andrew Chalkley': ['jQuery Basics', 'Node.js Basics'],
#  'Kenneth Love': ['Python Basics', 'Python Collections']}
# 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(dict):
    return len(dict.keys())

def num_courses(dict):
    total = 0
    for value in dict.values():
        total += (len(value))
    return total

def courses(dict):
    total_list = []
    for value in dict.values():
        for item in value:
            total_list.append(item)
    print(total_list)

def most_courses(dict):
    leader = 0
    teacher_most = ""
    for key, value in dict.items():
        if len(value) > leader:
            leader = len(value)
            teacher_most = key
    return teacher_most

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