def p_importIdentifiers(self, p):
        """importIdentifiers : importIdentifiers ',' importIdentifier
                             | importIdentifier"""
        n = len(p)
        if n == 4:
            p[0] = p[1] + [p[3]]
        elif n == 2:
            p[0] = [p[1]]
def p_importIdentifiers ( self , p ) : n = len ( p ) if n == 4 : p [ 0 ] = p [ 1 ] + [ p [ 3 ] ] elif n == 2 : p [ 0 ] = [ p [ 1 ] ]
importIdentifiers : importIdentifiers ',' importIdentifier
                             | importIdentifier