Now that we have all the building blocks in place, it's time to build a movie recommendation system. We learned all the underlying concepts that are needed to build a recommendation system. In this section, we will build a movie recommendation system based on the data provided in the file ratings.json. This file contains a set of people and their ratings for various movies. When we want to find movie recommendations for a given user, we will need to find similar users in the dataset and then come up with recommendations for this person.

Create a new Python file and import the following packages:

import argparse 
import json 
import numpy as np 
 
from compute_scores import pearson_score 
from collaborative_filtering import find_similar_users 

Define a function to parse the input arguments. The only input argument would be the name of the user:

def build_arg_parser(): 
    parser = argparse.ArgumentParser(description=...