If by generic you mean able to use other types of collections, aren't generator expressions[1] the generic version of list comprehensions?

List comprehension:

  a = [x for x in stuff if x > 1]

Equivalent generic version:

  a = list(x for x in stuff if x > 1)

With your own collection type:

  a = MyCustomCollection(x for x in stuff if x > 1)

[1] https://www.python.org/dev/peps/pep-0289/