Multiple exception handlers for the same Exception

Question

I have a code for a function which is called inside another function.(Result of refactoring).

So in the called function I have a huge block of try-catch statements as.

def Called():
     try:
         #All statements for the function in the try block.
     except A:
         # Exception handler.
     except B:
         # Exception handler.
     except A: 
         # Exception handler.

The problem I have is that I need to catch two exceptions of the same type (At different locations in the Called function). Which then are handled by the Calling function.

One way would be to define two try-except blocks within the Called function. But I am not understanding how the Calling function can handle two exceptions of the same type differently.

This doesn't make sense... _why_ do you need two `catch` blocks for the same exception? — ApproachingDarknessFish, Jan 22 '13 at 16:50
**two exceptions of the same type**, name some `same type` exceptions? — Ashwini Chaudhary, Jan 22 '13 at 16:51
You will need to use nested exceptions to do what your after. Personally I would recommend you thinking over your problem and you might find another solution to the problem. — Matt Seymour, Jan 22 '13 at 16:53
@AshwiniChaudhary: HTTPException, when I am connecting to the server. — veepsk, Jan 22 '13 at 16:54
@ValekHalfHeart: Since I intend to handle both the exceptions of the same type differently. — veepsk, Jan 22 '13 at 16:54
@veepsk -- I didn't, but I guess you didn't provide enough information about your problem, to answer it sufficiently. — root, Jan 22 '13 at 17:03

score 3 · Answer 1 · answered Jan 22 '13 at 16:51

This won't work as advertised; only the first except A clause will ever get executed. What you need is either some logic inside the clause to further inspect the exception, or (if the code inside the try block permits) several try-except blocks.

Example of the former approach:

try:
    something_that_might_fail()
except A as e:
    if e.is_harmless():
        pass
    elif e.is_something_we_can_handle():
        handle_it()
    else:
        raise    # re-raise in the hope it gets handled further up the stack

score 0 · Answer 2 · edited Nov 28 '18 at 05:53

0

I think this will work

def Called():
     try:
         #All statements for the function in the try block.
     except A:
         try: 
             do_someting()
         except B:
             try:
                do_somthing_else()
             except:

     except A: 
         # Exception handler.

edited Nov 28 '18 at 05:53

Sociopath

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answered Nov 28 '18 at 05:50

Steve Kim

1

Multiple exception handlers for the same Exception

2 Answers2

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