MongoDB for Developers: Homework 3.1

remove_lowest_score.py

from pymongo import MongoClient

def remove_lowest_score(student):
    homework_scores = filter(lambda x: x['type'] == "homework", student['scores'])
    all_homework_scores = map(lambda x: x['score'], homework_scores)
    min_homework_score = min(all_homework_scores)
    all_scores = filter(lambda x: not(x['type'] == "homework" and x['score'] == min_homework_score), student['scores'])
    db.students.update_one({"_id": student["_id"]}, {"$set": {"scores" : all_scores}})

client = MongoClient()
db = client.school

cursor = db.students.find()
for document in cursor:
    remove_lowest_score(document)