deftest(code):tokens=list(tokenize.tokenize(iter([code]).__next__))from5=tokenize.untokenize(tokens)print("from5   ",from5,eval(from5))tokens2= [tok[:2]fortokintokens]from2=tokenize.untokenize(tokens2)print("from2   ",from2,eval(from2))

>>> test(b't"{ {} }"')from5    b't"{ {} }"' Template(strings=('', ''), interpolations=(Interpolation({}, ' {}', None, ''),))from2    b't"{{}}"'   Template(strings=('{}',), interpolations=())>>> test(b'f"{ {} }"')from5    b'f"{ {} }"' {}from2    b'f"{ {} }"' {}