python - 在 Python 3 中检查多个整数

Question

最近发现了一种在Python 3中检测一个变量是否为int的方法，语法是这样的:

try:
    a = int(a)
except ValueError:
    print("Watch out!  The Index is not a number :o (this probably won't break much in this version, might in later ones though!")
    error = True

但是，当测试多个变量时，很快就会变得很难看:

def IntegerChecker(a, b, c, d): #A is Index, B is End Time, C is Distance, D is Speed Limit
    global error
    try:
        a = int(a)
    except ValueError:
        print("Watch out!  The Index is not a number :o (this probably won't break much in this version, might in later ones though!")
        error = True
    try:
        b = int(b)
    except ValueError:
        print("Watch out!  The End Time is not a number :o")
        error = True
    try:
        c = int(c)
    except ValueError:
        print("Watch out!  The Distance is not a number :o")
        error = True
    try:
        d = int(d)
    except ValueError:
        print("Watch out!  The Speed Limit is not a number :o")
        error = True

有没有更简单的方法来测试变量是否为整数，如果不是，则将变量更改为 true 并向用户打印一条独特的消息？

请注意，我是 Python 的新手程序员，但是如果有更复杂的方法来做到这一点，我很想知道。另一方面，这在 Stack Exchange 的代码审查部分会更好吗？

Answer 1

这是我的解决方案

def IntegerChecker(**kwargs): #A is Index, B is End Time, C is Distance, D is Speed Limit
    error = False
    err = {
        'index': ('Watch out!  The Index is not a number :o (this probably '
                  'won\'t break much in this version, might in later ones though!'),
        'end_time': 'Watch out!  The End Time is not a number :o',
        'distance': 'Watch out!  The Distance is not a number :o',
        'speed': 'Watch out!  The Speed Limit is not a number :o'
    }
    for key, value in kwargs.items():
        try:
            int(value)
        except ValueError:
            print(err.get(key))
            error = True
    return error

IntegerChecker(index=a, end_time=b, distance=c, speed=d)