def returns(type):
    """Specifies the return type for a published service.

@returns(int)
def f(...):
    pass
"""
    def l(func):
        if hasattr(func, '__annotations__'):
            func.__annotations__['return'] = type
        else:
            func.__annotations__ = {'return': type}
        return func
    return l
Specifies the return type for a published service.

@returns(int)
def f(...):
    pass