Question

我有这个程序：

print('Python accept decrease numbers\n')

initial = int(input('Initial number:'))
ending = int(input('Ending number:'))
decrease = -(int(input('Decrease number:')))

for n in range(initial,ending,decrease):
    if (initial < ending):
        ending,initial = initial,ending
    print (n)

如果初始值小于结束值，我想交换初始值和结束值，以便我可以得到减少值相反，它什么都不打印出来：

Python accept decrease numbers

Initial number:5
Ending number:50
Decrease number:2
>>>

我错过了什么吗？感谢。

Answer 1

只需在for周期之外移动支票：

print('Python accept decrease numbers\n')

initial = int(input('Initial number:'))
ending = int(input('Ending number:'))
decrease = -(int(input('Decrease number:')))

if (initial < ending):
    ending,initial = initial,ending

for n in range(initial,ending,decrease):
    print (n)

如何交换初始数字和结束数字的值？

1 个答案: