title: convert byte text( type is string) to string in python
body: <p>I have a string like this: <code>s = "b'1f\xe6\xb5\x8b\xe7\xbb\x98'"</code></p>
  
  <p>How to convert it back to the original string?</p>
  
  <p>I try to use <code>eval(s)</code>, however get <code>SyntaxError: bytes can only contain ASCII literal characters.</code></p>