During handling of the above exception, another exception occurred: Traceback (most recent call last): File "<stdin>", line 6, in <module> NameError: name 'a' is not defined >>> 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 这里可以发现有两个异...
File "D:\Soft File\Python\Lib\subprocess.py", line 997, in _execute_child startupinfo) FileNotFoundError: [WinError 2] 系统找不到指定的文件。 During handling of the above exception, another exception occurred: Traceback (most recent call last): File "D:/Test/SWP/TestSWP/chorme/chorme.p...
Handling run-time error: int division or modulo by zero try-finally 语句 try-finally 语句无论是否发生异常都将执行最后的代码。 以下实例中 finally 语句无论异常是否发生都会执行: 实例 try: runoob() except AssertionError as error: print(error) else: try: with open('file.log') as file: read_...
Handling run-timeerror:intdivisionormodulo by zero try-finally 语句 try-finally 语句无论是否发生异常都将执行最后的代码。 以下实例中 finally 语句无论异常是否发生都会执行: 实例 try: runoob() exceptAssertionErroraserror: print(error) else: try: withopen('file.log')asfile: read_data=file.read()...
except (RuntimeError, TypeError, NameError): pass 1. 2. except子句可以忽略异常的名称,它将被当作通配符使用。你可以使用这种方法打印一个错误信息,然后再次把异常抛出。 示例: import sys try: f = open('myfile.txt') s = f.readline()
Handling run-time error: int divisionormodulo by zero try-finally 语句 try-finally 语句无论是否发生异常都将执行最后的代码。 以下实例中 finally 语句无论异常是否发生都会执行: 实例 try: runoob()exceptAssertionError as error:print(error)else:try: ...
file = open('example.txt', 'r') except FileNotFoundError: print("File not found!") Different Modes for a File Handling in Python In Python, there are several modes for file handling (file open modes) including: Read mode ('r'): This mode is used to read an existing file. ...
3. Handling HTTP Errors To handle possible HTTP errors gracefully: import requests response = requests.get('https://api.example.com/data') try: response.raise_for_status() # Raises an HTTPError if the status is 4xx, 5xx data = response.json() print(data) except requests.exceptions.HTTPEr...
open() as file: print(file.read()) except IOError as e: print("file not found") Instead of checking if you can open the file, you’re just trying to open it. If this works, then great! If it doesn’t work, then you catch the error and handle it appropriately. Note that you...
文件不存在错误(FileNotFoundError):尝试打开或读取一个不存在的文件。 除零错误(ZeroDivisionError):尝试进行除以零的操作。 值错误(ValueError):传递给函数的参数类型正确,但是值不合适。 属性错误(AttributeError):尝试访问对象没有的属性。 异常处理错误(ExceptionHandlingError):在异常处理语句中出现错误,例如错误的语...