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how to raise the exception in exit python

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Depressed Dingo answered on April 4, 2021 Popularity 9/10 Helpfulness 4/10

answer how to raise the exception in __exit__ python

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how to raise the exception in exit python

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# The proper procedure is to raise the new exception inside of the __exit__ handler.
# You should not raise the exception that was passed in though; to allow for context manager chaining, in that case you should just return a falsey value from the handler. Raising your own exceptions is however perfectly fine.
# Note that it is better to use the identity test is to verify the type of the passed-in exception:

def __exit__(self, ex_type, ex_val, tb):
    if ex_type is VagueThirdPartyError:
        if ex_val.args[0] == 'foobar':
            raise SpecificException('Foobarred!')

        # Not raising a new exception, but surpressing the current one:
        if ex_val.args[0] == 'eggs-and-ham':
            # ignore this exception
            return True

        if ex_val.args[0] == 'baz':
            # re-raise this exception
            return False

    # No else required, the function exits and `None` is  returned
# You could also use issubclass(ex_type, VagueThirdPartyError) to allow for subclasses of the specific exception.

Popularity 9/10 Helpfulness 4/10 Language python

Source: stackoverflow.com

Tags: exception python raise

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Contributed on Mar 16 2022

Depressed Dingo

0 Answers Avg Quality 2/10

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raise exception in python

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#raise exception
raise ValueError('A very specific bad thing happened.')

Popularity 10/10 Helpfulness 4/10 Language python

Source: stackoverflow.com

Tags: exception exce

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Contributed on Apr 04 2021

Trewqy Zebra

0 Answers Avg Quality 2/10

raise exception in python

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raise Exception('I know Python!') # Don't! If you catch, likely to hide bugs.

Popularity 10/10 Helpfulness 4/10 Language python

Source: stackoverflow.com

Tags: exception exce

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Contributed on Apr 04 2021

Trewqy Zebra

0 Answers Avg Quality 2/10

how to raise exception in python

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-1

# Raise a built-in exception
raise ValueError("Invalid value entered!")

# Raise a custom exception
class MyCustomException(Exception):
    pass

raise MyCustomException("This is a custom exception!")

Popularity 9/10 Helpfulness 1/10 Language python

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Contributed on Sep 12 2023

YOU.com

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Python How to raise an Exception

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-1

def raise_an_error(error):
    raise error

raise_an_error(ValueError)

Popularity 10/10 Helpfulness 1/10 Language python

Source: globallearning.ucertify.com

Tags: exception exce

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Contributed on May 20 2022

Amused Ant

0 Answers Avg Quality 2/10

how to raise the exception in exit python

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how to raise the exception in exit python

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