def parser(tokens): p = Parser(tokens) return p.one_of( (lambda: p.expect('eq')), (lambda: p.expect('dash')), (lambda: p.expect('under')) )['value']
def parser(tokens): p = Parser(tokens) return p.many_of(lambda: p.expect('eq')['value'])
def parser(tokens): p = Parser(tokens) p.expect('lparen') res = p.maybe(lambda: p.expect('eq')) p.expect('rparen') return res['value'] if res else True
def parser(tokens): p = Parser(tokens) p.expect('eq') p.expect('dash') p.expect('under') return True
def parser(tokens): p = Parser(tokens) p.expect('anything')
def parser(tokens): p = Parser(tokens) p.expect('eq') return True