当写入sql-alchemy varchar字符串元素时,将收到以下错误:
....You must not use 8-bit bytestrings unless you use a text_factorythat can interpret 8-bit bytestrings (like text_factory = str)....
错误:You must not use 8-bit bytestrings unless you use a text_factory thatcan interpret 8-bit bytestrings (like text_factory = str).signsave/Exception Type: ProgrammingErrorYou must not use <