Try it Yourself » Since the try block raises an error, the except block will be executed. Without the try block, the program will crash and raise an error: Example This statement will raise an error, becausexis not defined: print(x) ...
If an exception is raised due to the code in the try block, the execution continues with the statements in the except block. So, it is up to the programmer how to handle the exception. The plain try-except block will catch any type of error. But, we can be more specific. For instan...
如果你不想在异常发生时结束你的程序,只需在try里捕获它。 Thetryblock lets you test a block of code for errors. Theexceptblock lets you handle the error. Thefinallyblock lets you execute code, regardless of the result of the try- and except blocks. You can define as many exception blocks ...
还记得上面有两个except语句的示例吗？您还可以使用finally语句，无论代码块是否引发错误，该语句都会执行。finally语句如下所示：try: print(x)except: print("X was not defined")finally: print("Our try … except block is complete")您可能会认为上面的代码块将打印出一行：X was not defined 但是，f...
by zero try: 2/'a' except Exception, e: # error occurred, log 'e', etc print ...
还记得上面有两个except语句的示例吗?您还可以使用finally语句,无论代码块是否引发错误,该语句都会执行。finally语句如下所示: try: print(x) except: print("X was not defined") finally: print("Our try … except block is complete") 您可能会认为上面的代码块将打印出一行: ...
$ python try_except.py Enter something --> Why did you do an EOF on me? $ python try_except.py Enter something --> Python is exceptional! Done 说明:每个try语句都必须有至少一个except语句。如果有一个异常程序没有处理,那么Python将调用默认的处理器处理,并终止程序且给出提示。 你可以用raise语...
Python提供了一个关键字finally,它总是在try和except块之后执行。最后一个块总是在try块正常终止之后或者try块由于某些异常终止之后执行。 语法: try:# Some Code...except:# optional block# Handling of exception (if required)else:# execute if no exceptionfinally:# Some code ...(always executed)# Pyth...
This is finally block. In the above example, we are dividing a number by0inside thetryblock. Here, this code generates an exception. The exception is caught by theexceptblock. And, then thefinallyblock is executed. Also Read: Python built-in Exception...
Try, Except, and Finally BlocksWhat is the purpose of the try, except, and finally blocks in Python exception handling? How does the try block work in handling exceptions in Python? What is the role of the except block? How is it used to catch exceptions? Explain the purpose of the ...