def add_plus_C(self):
    s_group = VGroup(self.s_part1, self.s_part2)
    plus_Cs = [TexMobject(('+%d' % d)) for d in range(1, 8)]
    for plus_C in plus_Cs:
        plus_C.set_color(YELLOW)
        plus_C.move_to(s_group, RIGHT)
    plus_C = plus_Cs[0]
    self.change_mode('sassy')
    self.wait()
    self.play(s_group.next_to, plus_C.copy(), LEFT, GrowFromCenter(plus_C))
    self.wait()
    for new_plus_C in plus_Cs[1:]:
        self.play(Transform(plus_C, new_plus_C))
        self.wait()
def add_plus_C(self):
    s_group = VGroup(self.s_part1, self.s_part2)
    plus_Cs = [TexMobject(('+%d' % d)) for d in range(1, 8)]
    for plus_C in plus_Cs:
        plus_C.set_color(YELLOW)
        plus_C.move_to(s_group, RIGHT)
    plus_C = plus_Cs[0]
    self.change_mode('sassy')
    self.wait()
    self.play(s_group.next_to, plus_C.copy(), LEFT, GrowFromCenter(plus_C))
    self.wait()
    for new_plus_C in plus_Cs[1:]:
        self.play(Transform(plus_C, new_plus_C))
        self.wait()