O'Reilly logo

Learning Python by Fabrizio Romano

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Generators

Generators are one very powerful tool that Python gifts us with. They are based on the concepts of iteration, as we said before, and they allow for coding patterns that combine elegance with efficiency.

Generators are of two types:

  • Generator functions: These are very similar to regular functions, but instead of returning results through return statements, they use yield, which allows them to suspend and resume their state between each call
  • Generator expressions: These are very similar to the list comprehensions we've seen in this chapter, but instead of returning a list they return an object that produces results one by one

Generator functions

Generator functions come under all aspects like regular functions, with one difference: instead ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required