parameters: (fd, data)
docstring: Write all the data to a descriptor.
docstring_summary: Write all the data to a descriptor.
docstring_tokens: Write all the data to a descriptor .
function: def _writen(fd, data):
      """Write all the data to a descriptor."""
      while data != '':
          n = os.write(fd, data)
          data = data[n:]
function_tokens: def _writen ( fd , data ) : while data != '' : n = os . write ( fd , data ) data = data [ n : ]