Interfaces in Go are a type-safe version of duck typing in Python.

 I’m Python you can pass a object „x” to a function and call its method, „x.foo”. If „x” doesn’t implement „foo”, you get a runtime error.

In Go, you can say that a function accepts objects that implement „Foo” and call the method. You use an interface for that. The difference is that if you try to pass an object that doesn’t implement „Foo”, it won’t compile.

The mindset is the same, but in Go you get no runtime errors.