ValueError: invalid literal for int() with base 10: '' has occurred idk 解决方案答案

【问题标题】：ValueError: invalid literal for int() with base 10: '' has occurred idk solutionValueError: invalid literal for int() with base 10: '' has occurred idk 解决方案
【发布时间】：2020-08-11 13:28:08
【问题描述】：


dice = [1, 2, 3, 4, 5, 6]
first = [random.choice(dice) for i in range(5)]
print(first)

while True:
    baggage = []
    retry = random.choice(dice)
    F = input("Choose the dice you want to roll again. (if you don't want to roll again, enter the '0'.)>")
    baggage.append(F)
    del first[int(F)-1]
    first.insert(int(F)-1, retry)
    if F == '0' or len(baggage) > 5:
        break

print(first)

run > ValueError: int() 以 10 为底的无效文字：''

帮助...

【问题讨论】：

运行程序时输入的输入值是多少？
介于 1 到 5...
@Aziz 错误消息显示，它是一个空字符串文字
@MZ omg 我意识到我的错误谢谢????????

标签： python python-3.x

【解决方案1】：

当您输入字母而不是数字时会发生错误。

此外，您应该在尝试删除该索引上的数字之前测试用户输入的有效性：

from numpy import random

dice = [1, 2, 3, 4, 5, 6]
first = [random.choice(dice) for i in range(5)]
print(first)

while True:
    baggage = []
    retry = random.choice(dice)
    F = input("Choose the dice you want to roll again. (if you don't want to roll again, enter the '0'.)>")
    if F == '0' or len(baggage) > 5 or F.isalpha() or int(F)>5:
        break
    else:
        baggage.append(F)
        del first[int(F)-1]
        first.insert(int(F)-1, retry)

print(first)

【讨论】：