Python string to byte array

Scene:

When Java plus decryption and Python encryption and decryption, because some non-display characters can not confirm whether the two are consistent, it is necessary to play their hexadecimal byte array to compare

1.python Code Implementation

Str= ' 123 ';
Print Str.encode (' hex ')

The results show:
313233

2. Java implementation

        String str= "123";        StringBuffer SBF=new  stringbuffer ();          for (int i=0;i<str.length (); i++) {            Integer tmp= (int) Str.charat (i);            Sbf.append (integer.tohexstring (TMP));        }        System.out.println (Sbf.tostring ());

Python string to byte array