fix_pylint_w0719

[SunsetWolf]

Description

Motivation and Context

How Has This Been Tested?

• Pass the test by running: pytest qlib/tests/test_all_pipeline.py under upper directory of qlib.
• If you are adding a new feature, test on your own test scripts.

Screenshots of Test Results (if appropriate):

1. Pipeline test:
2. Your own tests:

Types of changes

• Fix bugs
• Add new feature
• Update documentation

[SunsetWolf]

For the changes in the recorder.py file, I think it is better to raise ValueError because self._artifact_uri is defined during initialization; if self._artifact_uri is not defined, it is more appropriate to raise AttributeError.