在 Python 编程中，异常处理是确保程序稳定性和健壮性的关键部分。以下是一些关于 Python 异常处理的基本概念和技巧。

常见异常类型

  • ValueError: 当传入的参数值不符合期望时抛出。
  • TypeError: 当尝试进行无效的类型转换时抛出。
  • ZeroDivisionError: 当尝试除以零时抛出。

使用 try-except 块

try:
    # 尝试执行的代码
    result = 10 / 0
except ZeroDivisionError:
    print("除数不能为零")

异常传播

如果在一个 except 块中没有处理异常，它将被传播到外层的 try-except 块或程序的其他部分。

自定义异常

class MyException(Exception):
    pass

try:
    # 可能抛出异常的代码
    raise MyException("这是一个自定义异常")
except MyException as e:
    print(e)

图片示例

Python 异常处理流程图

Python 异常处理流程图

更多关于 Python 异常处理的深入内容，可以参考本站的 Python 异常处理教程。

# Python Exception Handling

Exception handling in Python is crucial for ensuring the stability and robustness of your programs. Here are some basic concepts and tips about Python exception handling.

## Common Exception Types

- `ValueError`: Raised when the input value is not as expected.
- `TypeError`: Raised when an invalid type conversion is attempted.
- `ZeroDivisionError`: Raised when attempting to divide by zero.

## Using try-except Blocks

```python
try:
    # Code to be tried
    result = 10 / 0
except ZeroDivisionError:
    print("Cannot divide by zero")

Exception Propagation

If an exception is not handled within a try-except block, it will propagate to the outer block or other parts of the program.

Custom Exceptions

class MyException(Exception):
    pass

try:
    # Code that may raise an exception
    raise MyException("This is a custom exception")
except MyException as e:
    print(e)

Image Example

Python Exception Handling Flowchart

Python Exception Handling Flowchart

For more in-depth content about Python exception handling, check out our Python Exception Handling Tutorial.