...print('Handling run-time error:', err) ... Handlingrun-time error: division by zero 8.4. 抛出异常 raise语句允许程序员强制发生指定的异常。例如: >>> >>> raiseNameError('HiThere') Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: HiThere raise唯...
print('Handling run-time error:',err) 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('fi...
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: try: runoob() except AssertionError as error: print(error) else: try: with open('file.log') as file: read_data = ...
Handlingrun-timeerror:intdivisionormodulobyzero 1. 2. 3. 4. 5. 6. 7. 8. 9. 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: try: runoob() except AssertionError as error: print(error) else: try: with open('file....
filePointer = open('appFile','r') 5 IOError: [Errno 2] No such file or directory: 'appFile' Advertisement Wrapping It Up In this tutorial, we saw how to get started with handling errors in Python and using the logging module to log errors. We saw the usage oftry,except, andfinally...
with open(filename,'w') as f: f.write(data)exceptIOError:print('Error: can't write to file')exceptException as e:print('Unexpected error:'+str(e)) write_to_file('some_file','some_data') 很简单, 我们只想写个文件而已, 然后在 try except 的层峦叠嶂中, 整个代码成了一坨 ...
except (RuntimeError, TypeError, NameError): pass 最后一个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。 import sys try: f = open('myfile.txt') s = f.readline() i = int(s.strip()) ...
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except (RuntimeError, TypeError, NameError): pass 最后一个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。 import sys try: f = open('myfile.txt') s = f.readline() i = int(s.strip()) ...
>>>defthis_fails():x=1/0>>>try:this_fails()exceptZeroDivisionErroraserr:print('Handling run-time error:',err)Handlingrun-timeerror:intdivisionormodulobyzero 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: ...