The $and operator
Sometimes, you need to find documents that meet multiple conditions at the same time. In MongoDB, this is where the $and operator comes in:
{ "$and": [{ "field1": value1, "field2": value2 }] }
But there's also a shortcut: If each condition applies to a different field, you can simply include multiple key-value pairs in your filter. MongoDB will implicitly apply an AND between them:
{ "field1": value1, "field2": value2 }
Tip: To refresh your memory on all available fields in the movies collection, you can run mov.find_one(); this will print out the first document in the collection.
Deze oefening maakt deel uit van de cursus
Introduction to MongoDB in Python
Oefeninstructies
- Find all movies that have a rating less than or equal to
6.5but still managed to win an Oscar. - Turn the resulting cursor object into a list and store the result as
low_oscar.
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
# Movies with rating < 6.5 that won oscar
low_oscar_curs = mov.find({
____,
____
})
# Convert from cursor to list
low_oscar = ____
print(f"Found {len(low_oscar)} documents:")
print(low_oscar)