parameters: (self)
return_statement: return self._fd
docstring: Return the underlying file descriptor (an integer).
docstring_summary: Return the underlying file descriptor (an integer).
docstring_tokens: Return the underlying file descriptor ( an integer ) .
function: def fileno(self):
          """Return the underlying file descriptor (an integer)."""
          self._checkClosed()
          return self._fd
function_tokens: def fileno ( self ) : self . _checkClosed ( ) return self . _fd