在Python中引发多个异常

Question

有什么方法可以在Python中引发多个异常吗？在以下示例中，仅引发第一个异常。

l = [0]
try:
    1 / 0
except ZeroDivisionError as e:
    raise Exception('zero division error') from e

try:
    l[1]
except IndexError as e:
    raise Exception('Index out of range') from e

还有其他办法吗？

Answer 1

一旦引发异常且未被捕获，程序的执行将停止。因此，在如此简单的脚本中只能启动一个异常。

如果您确实希望程序引发多个异常，那么您可以创建一个表示多个异常的自定义异常，并在 except 块内启动它。示例：

class ZeroDivAndIndexException(Exception):
    """Exception for Zero division and Index Out Of Bounds."""
I = [0]
try:
    1 / I[0]
except ZeroDivisionError as e:
    try:
        I[1]
        # Here you may raise Exception('zero division error')
    except IndexError as e2:
        raise ZeroDivAndIndexException()

Answer 2

我的解决方案有点长，但似乎有效：

class CustomError(Exception):
  pass

l = [0]
exeps = []
try:
  1 / 0
except ZeroDivisionError as e:
  exeps.append(e)
try:
  l[1]
except IndexError as e:
  exeps.append(e)

if len(exeps)!=0:
  [print(i.args[0]) for i in exeps]
  raise CustomError("Multiple errors !!")

Answer 3

try:
    pass
except AttributeError:
    pass
except IndexError:
    pass