tommikaikkonen

  from dataclasses import dataclass, field

  @dataclass
  class MyClass:
    x = field()

  @dataclass
  class MyClass:
    x: object

    fn(1)(2)(3)

    fn(1, 2, 3) === fn(1, 2)(3) === fn(1)(2, 3)

    def find(predicate, iterable, default=None):
        """Returns the first value that matches predicate, otherwise default=None"""
        return next(
            (x for x in iterable if predicate(x)),
            default
        )

    find(lambda x: 'widgets' in x, mixed_widgets)['widgets']