What is the difference between filter() and get() in Django ORM?

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In Django ORM, both filter() and get() are used to retrieve data from the database, but they differ significantly in behavior and use cases.

filter()

• Returns: A QuerySet (which can contain zero, one, or many objects).

• Use case: When you want to retrieve multiple records or are unsure how many records match the query.

• This returns a QuerySet of all books written by "Alice". If no books match, it returns an empty QuerySet (not an error).

get()

• Returns: A single object, not a QuerySet.

• Use case: When you are certain that exactly one record matches the query.

This returns the single book with id=1.

• If no object matches, it raises DoesNotExist.

• If more than one object matches, it raises MultipleObjectsReturned.

In practice, use get() when you're confident of a single match (like by unique fields), and filter() when you want flexibility or to loop over results.

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