我在玩python，这是我的新代码:
a = 0
while a < 10:
a = a + 1
print("A is Less than 10")
我想再添加一些代码，上面写着:
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.")
但所做的只是打印"A大于10，但小于20"