I've written a program that needs to deal with a function that can throw multiple exceptions. For each exception I catch I have some code that will handle it specifically.
However, I also have some code I want to run no matter which exception was caught. My current solution is a handle_exception()
function which is called from each except
block.
try:
throw_multiple_exceptions()
except FirstException as excep:
handle_first_exception()
handle_exception()
except SecondException as excep:
handle_second_exception()
handle_exception()
Is there a better way to do this? I would like the code to look like this:
try:
throw_multiple_exceptions()
except FirstException as excep:
handle_first_exception()
except SecondException as excep:
handle_second_exception()
except Exception as excep:
handle_exception()
By handling multiple exceptions, a program can respond to different exceptions without terminating it. In Python, try-except blocks can be used to catch and respond to one or multiple exceptions. In cases where a process raises more than one possible exception, they can all be handled using a single except clause.
🔹 Multiple Except Clauses According to the Python Documentation: A try statement may have more than one except clause, to specify handlers for different exceptions. At most one handler will be executed. In this example, we have two except clauses.
The try-catch is the simplest method of handling exceptions. Put the code you want to run in the try block, and any Java exceptions that the code throws are caught by one or more catch blocks. This method will catch any type of Java exceptions that get thrown. This is the simplest mechanism for handling exceptions.
5. Can one block of except statements handle multiple exception? Answer: a Explanation: Each type of exception can be specified directly. There is no need to put it in a list.
how about PEP 0443? its awesome, and very scalable because all you have to do is code and register new handlers
from functools import singledispatch
@singledispatch
def handle_specific_exception(e): # got an exception we don't handle
pass
@handle_specific_exception.register(Exception1)
def _(e):
# handle exception 1
@handle_specific_exception.register(Exception2)
def _(e):
# handle exception 2
try:
throw_multiple_exceptions()
except Exception as e:
handle_specific_exception(e)
handle_exception()
You could do something like:
try:
throw_multiple_exceptions()
except FirstException, SecondException as excep:
if isinstance(excep, FirstException):
handle_first_exception()
else:
handle_second_exception()
handle_exception()
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