When a tool writes an error message, ArcPy generates anarcpy.ExecuteErrorexception.Pythonallows you to write a routine that automatically runs when a system error is generated. In this error-handling routine, r
PYTHON ERRORS: Traceback info: File "c:\temp\errortest.py", line 10, in <module> x = "a" + 1 Error Info: cannot concatenate 'str' and 'int' objects float("a text string") PYTHON ERRORS: Traceback info: File "c:\temp\errortest.py", line 10, in <module> float("a text st...
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...
importsysdefmain():try:# 模拟一个可能抛出异常的操作num=int(input("请输入一个整数: "))print(f"您输入的整数是:{num}")exceptValueError:print("输入无效,必须是整数。")sys.exit(1)# 返回非零值表示出现了错误exceptExceptionase:print(f"发生了一个未知错误:{e}")sys.exit(2)# 返回另一个非零值...
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()) ...
During handlingofthe above exception,another exception occurred:RuntimeErrorTraceback(most recent call last)<ipython-input-10-e950a6292482>in<module>2print(10/0)3except:--->4raiseRuntimeError("something is wrong")5RuntimeError:something is wrong 串...
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。 importsys try: f=open('myfile.txt') s=f.readline() i=int(s.strip())
print('Handling run-time error:', err) Handling run-time error: int division or modulo by zero 1. 2. 3. 4. 5. 6. 7. 抛出异常 Python 使用 raise 语句抛出一个指定的异常。例如: >>> raise NameError('HiThere') Traceback (most recent call last): ...
>>>defthis_fails():x=1/0>>>try:this_fails()except ZeroDivisionErroraserr:print('Handling run-time error:',err)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。
Handling run-time error: division by zero 抛出异常 raise 语句允许程序员强制发生指定的异常 >>> raise NameError('HiThere') Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: HiThere raise 唯一的参数就是要抛出异常 该参数必须是一个异常实例或是一个异常类 (...