I have a try
/finally
clause in my script. Is it possible to get the exact error message from within the finally
clause?
Python provides a keyword finally, which is always executed after try and except blocks. The finally block always executes after normal termination of try block or after try block terminates due to some exception. Example: Let’s try to throw the exception in except block and Finally will execute either exception will generate or not Python3
try…except blocks swiftly debug your Python code, a program attempts to execute the code in a “try” block. If this fails, the “except” block executes. The code in a “finally” statement processes regardless of an “except” block.
Irrespective of whether there is an exception or not "finally" block is guaranteed to execute. If the "finally" block is being executed after an exception has occurred in the try block, and if that exception is not handled. and if the finally block throws an exception.
In other words, this is generic for exceptions. When an exception is thrown in a try block, the interpreter looks for the except block following it. It will not execute the rest of the code in the try block. Python Exceptions are particularly useful when your code takes user input.
No, at finally
time sys.exc_info
is all-None, whether there has been an exception or not. Use:
try: whatever except: here sys.exc_info is valid to re-raise the exception, use a bare `raise` else: here you know there was no exception finally: and here you can do exception-independent finalization
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