class Any: pass

class object:
    def __init__(self):
        # type: () -> None
        pass

class type:
    def __init__(self, x):
        # type: (Any) -> None
        pass

# These are provided here for convenience.
class int: pass
class float: pass

class str: pass
class unicode: pass

class tuple: pass
class function: pass

class ellipsis: pass

# Definition of None is implicit
