CODEWITHSUNDEEP
python
van_blood
van_blood

Reputation: 13

Best way to get information about errors in python

I'm learning about python. I'm doing and application to monitoring voltage and I found that sometimes when you rise and error the final information about this error is not enough to understand it, when it happens. My question is: What is the best way to give the information?

For example, I know that I can do something like that:

class IncorrectVoltageError(Exception):
    pass

raise IncorrectVoltageError('Incorrect voltage, should be 5V')

>>IncorrectVoltageError: Incorrect voltage, should be 5V

but if it will be a common error in my code maybe the information could be in the class explain.

class IncorrectVoltageError(Exception):
    '''Incorrect voltage, should be 5V'''
    pass

raise IncorrectVoltageError(IncorrectVoltageError.__doc__)

>>IncorrectVoltageError: Incorrect voltage, should be 5V

What is the best way? And are there other ways?

Thanks

Upvotes: 1

Views: 82

Answers (1)

Witold Komorowski
Witold Komorowski

Reputation: 39

The common way is to override a specific method from the parent class. In that case, it is __init__ method.

Something like this:

class IncorrectVoltageError(Exception):
    def __init__(self, message=None, *args, **kwargs):
        if not message:
            message = "Incorrect voltage, should be 5V"
        super().__init__(message, *args, **kwargs)

Upvotes: 2

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