def expect(self, *args):
def none(_):<EOL><INDENT>return None<EOL><DEDENT>if len(args) == <NUM_LIT:1>:<EOL><INDENT>return lambda f: (self.expected.add((f.__name__, args[<NUM_LIT:0>])) or<EOL>none(f()) or f)<EOL><DEDENT>self.expected.add(args)<EOL>
Decorator that expects a certain PEP 257 violation.