CODE EXAMPLE FOR PYTHON

pygame point at mouse

import math

def rotate(self):
    mouse_x, mouse_y = pygame.mouse.get_pos()
    rel_x, rel_y = mouse_x - self.x, mouse_y - self.y
    angle = (180 / math.pi) * -math.atan2(rel_y, rel_x)
    self.image = pygame.transform.rotate(self.original_image, int(angle))
    self.rect = self.image.get_rect(center=self.position)