Day11:while循环

Python程序语言总共有二种回圈的语法。第一种是"for"回圈，另外一个则是"while"。

让我们来看看以下的程序码吧~

[In]
x=0
numbers=[]

while x <6: #当变数大於6中断回圈
    print(f"At the top is  {x}")
    numbers.append(x) #把X增加到串列里面
    x=x+1
    print("Numbers now:"),numbers
    print(f"{x} is at the bottom")
    print("The numbers:")
for number in numbers:


     print(number)
[Out]
At the top is  0
Numbers now:
1 is at the bottom
The numbers:
At the top is  1
Numbers now:
2 is at the bottom
The numbers:
At the top is  2
Numbers now:
3 is at the bottom
The numbers:
At the top is  3
Numbers now:
4 is at the bottom
The numbers:
At the top is  4
Numbers now:
5 is at the bottom
The numbers:
At the top is  5
Numbers now:
6 is at the bottom
The numbers:
0
1
2
3
4
5

总结:

while和for最大的不一样就是while-loop会直到他对应的布林表达式为False才会停下来。

Source:

https://ppt.cc/fopYQx
https://ppt.cc/f23jJx