deprecated-attribute / W4906

Message emitted:

Using deprecated attribute %r

Description:

The attribute is marked as deprecated and will be removed in the future.

Problematic code:

from configparser import ParsingError

err = ParsingError("filename")
source = err.filename  # [deprecated-attribute]

Correct code:

from configparser import ParsingError

err = ParsingError("filename")
source = err.source

Additional details:

The actual replacement needs to be studied on a case by case basis by reading the deprecation warning or the release notes.

Created by the stdlib checker.