def set_weight(self, weight):
self._fontproperties.set_weight(weight)<EOL>
Set the font weight.

ACCEPTS: [ a numeric value in range 0-1000 | 'ultralight' | 'light' | 'normal' | 'regular' | 'book' | 'medium' | 'roman' | 'semibold' | 'demibold' | 'demi' | 'bold' | 'heavy' | 'extra bold' | 'black' ]