ensure exception inherit a base exception

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Metadata

ID: python-best-practices/exception-inherit

Language: Python

Severity: Warning

Category: Best Practices

Description

New Exception must inherit the base Exception. Always use another exception as parent or use at least the Exception base class.

Learn More

Python Documentation: User-defined Exceptions

Non-Compliant Code Examples

class CustomException:
    """An Invalid exception class."""

Compliant Code Examples

class CustomException(Exception):
    """An Invalid exception class."""

How to use this rule

1
2
rulesets:
  - python-best-practices     # Rules to enforce Python best practices.

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