Question

OK！我得到的代码无法正常工作，以下是代码：

def abDucks (a,b): 
while (a>1): 
print(a, "Little Ducks swimming in the sea") 
print("And if ",b," Little Ducks should accidentally drown") 
print("There'll be ", (a-b), "Little Ducks swimming in the sea\n") 
a=(a-b) 

if (a<=1): 
print(a, "Little Ducks swimming in the sea") 
print("And if ",b," Little Ducks should accidentally drown") 
print("There'll be no Little Ducks swimming in the sea\n")

我遇到的问题是它计为0然后会打印：如果没有小鸭子不小心淹死了没有小鸭子在海里游泳

请帮助

我从来没有得到无限循环大声笑：P 当我使用（8,2）

运行此代码时会发生这种情况

8 Little Ducks swimming in the sea 
And if 2 Little Ducks should accidentally drown 
There'll be 6 Little Ducks swimming in the sea 

6 Little Ducks swimming in the sea 
And if 2 Little Ducks should accidentally drown 
There'll be 4 Little Ducks swimming in the sea 

4 Little Ducks swimming in the sea 
And if 2 Little Ducks should accidentally drown 
There'll be 2 Little Ducks swimming in the sea 

2 Little Ducks swimming in the sea 
And if 2 Little Ducks should accidentally drown 
There'll be 0 Little Ducks swimming in the sea 

0 Little Ducks swimming in the sea 
And if 2 Little Ducks should accidentally drown 
There'll be no Little Ducks swimming in the sea

Answer 1

您可以简洁地编写相同的代码，就像这样

def abDucks (a,b): 
    while (a - b >= 1):
        print(a, "Little Ducks swimming in the sea")
        print("And if ",b," Little Ducks should accidentally drown")
        print("There'll be ", (a-b), "Little Ducks swimming in the sea\n")
        a -= b
    else:
        print(a, "Little Ducks swimming in the sea")
        print("And if ",b," Little Ducks should accidentally drown")
        print("There'll be no Little Ducks swimming in the sea\n")

通过此更改，输出变为

8 Little Ducks swimming in the sea
And if  2  Little Ducks should accidentally drown
There'll be  6 Little Ducks swimming in the sea

6 Little Ducks swimming in the sea
And if  2  Little Ducks should accidentally drown
There'll be  4 Little Ducks swimming in the sea

4 Little Ducks swimming in the sea
And if  2  Little Ducks should accidentally drown
There'll be  2 Little Ducks swimming in the sea

2 Little Ducks swimming in the sea
And if  2  Little Ducks should accidentally drown
There'll be no Little Ducks swimming in the sea

需要有关Python Decrementing的帮助

1 个答案: