解析：Python中异常处理机制的案例应用-向日葵屋

解析：Python中异常处理机制的案例应用

原创 ╰半橙微兮° 2025-02-03 21:39 48阅读 0赞

在Python编程中，异常处理机制是一种应对程序运行中可能出现错误情况的方法。以下是一些案例应用：

try/except循环：
```python
def divide(a, b):
try:

 result = a / b
 print(f"Result: {result}")

except ZeroDivisionError:

 print("Error: Division by zero is not allowed.")

divide(4, 2) # Normal division
divide(4, 0) # Division by zero error handling


2. **finally**块：
```python
def open_file(path):
    try:
        with open(path, 'r') as file:
            print("File content:")
            for line in file:
                print(line.strip())
    finally:
        if "file" in locals():
            file.close()
open_file('test.txt')

自定义异常：
```python
class CustomError(Exception):
def init(self, message):
```
 super().__init__(message)
 self.message = message
```

def complex_cal(c1, c2):
try:
if abs(c1) > 10 or abs(c2) > 10:
raise CustomError(“Invalid input values.”)
result = (c1 + c2) / 2
return result
except CustomError as e:
print(e.message)
return None

result = complex_cal(5, -3)
if result is not None:
print(f”Result: {result}”)
```

以上就是Python中异常处理机制的一些案例应用。