Updates a document in Mongo

mongo_iii_update_record.py

#This block of code updates each television in the Mongo collection with
#the product information found on its specific page, which is accessed
#by the url obtained earlier

#This query obtains each url key-value pair in the collection
#The key-value pair is the unique identifier for the televisions
#I do not need the '_id' field so I set it to 0
url_query = product_info_collection.find({}, {'_id': 0, 'url': 1})

#This for loop iterates through each document found in the query
for item in url_query:
    
    #Obtains the product information dictionary
    product_info_dictionary = obtain_product_info_dict(item['url'])
    
    #Creates a variable to hold the dictionary in the format required by
    #the update_many() method
    update = {'$set': product_info_dictionary}
    
    #Updates the collection
    #'item' is the filter dictionary variable, in this case the url key-value pair
    #'update' is the product information dictionary obtained from the function
    #described above
    product_info_collection.update_many(item, update)