parameters: (s)
return_statement: return s.encode('ASCII')
docstring: Cast a string or byte string to an ASCII byte string.
docstring_summary: Cast a string or byte string to an ASCII byte string.
docstring_tokens: Cast a string or byte string to an ASCII byte string .
function: def _byte_string(s):
      """Cast a string or byte string to an ASCII byte string."""
      return s.encode('ASCII')
function_tokens: def _byte_string ( s ) : return s . encode ( 'ASCII' )