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

tangtai chen
tangtai chen
4,844 Points
Posted by tangtai chen
tangtai chen
4,844 Points

How do I create a new dictionary from undetermined values?

I know how to create a new dictionary but it won't work since with undetermined values. here is my example code:

def most_courses(sample_dict): max_val = 0 teacher = "" courses_list = {} for k in sample_dict.keys(): # print(len(sample_dict[k])) if max_val < len(sample_dict[k]): max_val = len(sample_dict[k]) teacher = k courses_list = sample_dict[k] # print(max_val) print(teacher) print(courses_list)

I would like to create a dictionary with my keys being teacher, and my values being course_list, but since they are undetermined before the loop finishes, so how do I do this? are we able to do that with python? since it is a from a python challenge i might took the wrong approach.

1 Answer

Mina Demian
Mina Demian
10,241 Points
Mina Demian
Mina Demian
10,241 Points

In Order to add a new element to the dictionary update -> add element to dictionary append -> add element to list

x ={} # Create Dictionary
x.update({'Mr John': [ ]}) # Add Element with key (teacher name) and value an empty array

#Lookup the teacher's name and get the empty array then add the course one by one to the array
x['Mr John'].append('Python 101')