What is the yield keyword in Python?

What is the yield keyword in Python?

The yield keyword in Python is used to create a generator function. It allows you to return values one at a time, pausing the function's state between each call.

How does using yield differ from return?

Using yield allows the function to produce a series of values over time, while return sends a single value and exits the function. Generators can be iterated over, maintaining their state.

Can you give me an example of a generator using yield?

Sure! Here's a simple example:

def count_up_to(n):
    count = 1
    while count <= n:
        yield count
        count += 1

This function will yield numbers from 1 to n.

What are the benefits of using generators?

Generators are memory efficient because they yield items one at a time and only when required, which is great for handling large datasets.