docs: def tzname_in_python2(myfunc):
      """Change unicode output into bytestrings in Python 2
  
      tzname() API changed in Python 3. It used to return bytes, but was changed
      to unicode strings
      """
      def inner_func(*args, **kwargs):
          if PY3:
              return myfunc(*args, **kwargs)
          else:
              return myfunc(*args, **kwargs).encode()
      return inner_func