python多次输入数据_Python：如何在输入错误之前重复最后输入提示？

I have an for statement which prompts the user to input 5. numbers. Like this:

"Input 1. number:

input 2. number:

..

..

.."

I want to repeat the last prompt the user gets before he makes a wrong input (number too big).

But my program skips the wrong one:

like this

"Input 1. number:

5

Accepted

input 2. number:

999

Wrong! Retry

(here I use *continue* for the loop)

input 3.number:

---"

What should I do to re-ask the second question?

解决方案

By using continue you are probably continuing ahead to the next input number. Try something like this:

number_of_inputs = 10

max_input = 99

for i in range(number_of_inputs):

answer = 0

while not answer or answer > max_input:

try:

answer = int(raw_input('Input {}. number: '.format(i)))

except ValueError:

continue

print 'The user selected', answer, 'for input', i

最后

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