Function fn

recipes/Python/577149_Simple_Validation_decorator/recipe-577149.py:5–12

(realfn)

def validate(schema):
    def fn(realfn):
        def wrapper(*args, **kws):
            field_names = schema.fields.keys()
            args_dict = dict(zip(realfn.func_code.co_varnames, args))
            args_dict.update(dict((field_name, kws.get(field_name)) for field_name in field_names if field_name in kws))
            schema().to_python(args_dict)
            return realfn(*args, **kws)
        return wrapper
    return fn