(self, name, val)
Set the value of a header.
Set the value of a header.
Set the value of a header .
def __setitem__(self, name, val):
        """Set the value of a header."""
        del self[name]
        self._headers.append((name, val))
def __setitem__ ( self , name , val ) : del self [ name ] self . _headers . append ( ( name , val ) )