How do I create a generator expression in Python?

How do I create a generator expression in Python?

You can create a generator expression by using parentheses. For example, (x*x for x in range(10)) generates squares of numbers from 0 to 9.

Can you explain how it differs from a list comprehension?

Sure! A generator expression returns an iterator and generates items on the fly, while a list comprehension creates a complete list in memory.

What are the benefits of using a generator expression?

Generator expressions are more memory efficient, especially for large datasets, since they yield items one at a time.

Can you give me an example of using a generator expression in a function?

Absolutely! You can use a generator expression in a function like this: def squares(n): return (x*x for x in range(n)). This will yield squares of numbers up to n.