Raise Specific Error¶
Sourcery comment id: raise-specific-error
¶
Description¶
Raise a specific error, so that callers of the code can handle the error appropriately.
Pattern¶
if incorrect_value():
raise Exception
if incorrect_value():
raise BaseException
if incorrect_value():
raise Exception("some custom error message")
Possible Fix¶
You can use one of the built-in exceptions of the standard library:
if incorrect_value():
raise ValueError
Or you can define your own exceptions deriving from a standard library exception:
if incorrect_value():
raise SpecificIncorrectValueError
Explanation¶
If a piece of code raises a specific exception type rather than the generic
BaseException
or Exception
,
the calling code can:
- get more information about what type of error it is
- define specific exception handling for it