python中有大于但不是函数吗？

我有这个代码,我只是在玩,因为我是python的新手,这是:

a = 0
while a < 10:
    a = a + 1
    print("A is Less than 10")

我想添加更多代码,说:如果a超过10但小于20,请打印:
我试过:

a = 0
while a < 10:
    a = a + 1
    print("A is Less than 10")
while a < 20:
    a = a + 1
    print("A is More than 10, but less than 20.")

但所有这一切都是打印"A超过10,但小于20"
基本上,python中是否有"少于但大于"的功能？顺便说一句,我正在运行第3版.