Python的try，expect语句基础联系中遇到循环上小问题

Python的try，expect语句基础联系中遇到循环上小问题

finished = False
result = 0
while not finished:
    try:
        result = int(input('enter a number:'))
        pass
    except ValueError:  # TODO - add something after except
        print("Please enter a valid integer.")
print("Valid result is:", result)

上面这个程序就是判断输入是否为整数，如果不是整数，不会结束，接着让输入，如果是整数，则输出值，结束，我上面代码，再输入正确整数后不会退出循环，麻烦看一下，修改一下，谢谢

用break结束循环

result = 0
while True:
    try:
        result = int(input('enter a number:'))
        break
    except ValueError:  # TODO - add something after except
        print("Please enter a valid integer.")
print("Valid result is:", result)
 

或者

finished = False
result = 0
while not finished:
    try:
        result = int(input('enter a number:'))
        finished = True
    except ValueError:  # TODO - add something after except
        print("Please enter a valid integer.")
print("Valid result is:", result)

你这代码少了一个跳出循环的方法。应该在

加一个break语句

finished = False
result = 0
while not finished:
    try:
        result = int(input('enter a number:'))
        pass
        finished = True
    except ValueError:  # TODO - add something after except
        print("Please enter a valid integer.")
print("Valid result is:", result)