tower defense shift click

            elif pygame.key.get_pressed()[pygame.K_LSHIFT]:
                chosenTower = -1
                for i in range(len(towerHitboxes)):
                    if towerHitboxes[i].collidepoint(mouse.get_pos()):
                        chosenTower = i
                        break
                if chosenTower>=0:
                    curStats = towers[chosenTower]
                    if len(towerStats[curStats['Name']])>=curStats['Level']+2:
                        cost = towerStats[curStats['Name']][curStats['Level']+1]['Cost']
                        if money>=cost:
                            money -= cost
                            curStats['Level'] += 1
                        else:
                            print("bro is poor")