在Python中,我们可以使用Exception类来捕获所有异常。 try:result=1/0exceptException:print("发生了异常!") Python Copy 在上面的代码中,我们尝试将1除以0,这将引发ZeroDivisionError异常。在我们的except块中,我们使用Exception来捕获所有异常。无论引发的是哪种类型的异常,程序都会执行except块中的代码,并打印出相应...
suite_for_Exception_with_Argument#multiple exceptionsexcept(Exception1, Exception2,..., ExceptionN)[, reason]: suite_for_Exception1_to_ExceptionN_with_Argument reason是异常类的实例,该实例有个属性,名为args,args是个元组,其中包含了该异常的提示信息: defsafe_float(obj):try: retval=float(obj)excep...
Thetryblock attempts division, while theexceptcatchesZeroDivisionError. The function returns None when invalid division occurs, preventing program termination. Catching Multiple Exceptions Handle different error types using multipleexceptclauses. multiple_errors.py def process_data(value): try: num = int(v...
This example demonstrates how you can nest 'try-except' blocks to handle errors in different contexts. The division by zero is caught by the inner 'except', while the outer 'except' catches an index error, showing how to manage multiple potential exceptions in different parts of the code....
同时处理多个异常的except语句 def safe_float(obj): try: retval = float(obj) except (ValueError, TypeError): retval = 'argument must be a number or numeric string' return retval 1. 2. 3. 4. 5. 6. 异常参数 # multiple exceptions
# Program to handle multiple errors with one# except statement# Python 3deffun(a):ifa<4:# throws ZeroDivisionError for a = 3b=a/(a-3)# throws NameError if a >= 4print("Value of b = ",b)try:fun(3)fun(5)# note that braces () are necessary here for# multiple exceptionsexceptZer...
#The except Clause with Multiple Exceptions try: You do your operations here; ... except(Exception1[, Exception2[,...ExceptionN]]]): If there is any exception from the given exception list, then execute this block. ... else: If there is no exception then execute this block. #The ...
处理异常的标准方法就是使用try...except语句。这一点其实比较类似于Java中的try...catch语句,事实上,大部分语言都有类似的捕捉异常的方法。 通常来说,可能产生异常的代码应该被try语句囊括进去,如果报异常的就会立即停止try语句中的剩余代码,并执行except语句中的代码。
try-except和try-finally 一个try语句可以对应一个或多个except子句,但只能对应一个finally子句,或一个try-except-finally复合语句 10.3.1 try-except 语句 try: try_suite # watch for exceptions here 监控这里的异常 except Exception[,reason]: except_suite # exception-handling code 异常处理代码 ...
except construct.An Example of Exception Handling Here’s a code snippet that shows the main exceptions that you’ll want to handle when using subprocess: Python import subprocess try: subprocess.run( ["python", "timer.py", "5"], timeout=10, check=True ) except FileNotFoundError as ...