[Bug]: Fix syntax errors and warnings

[zhongkechen]

Expected Behavior

The code should be warning free or at least error free.

Actual Behavior

There are a lot of syntax errors and warnings in the code base, causing noises when reading the code

Steps to Reproduce

N/A

SDK Version

N/A

Python Version

3.14

Is this a regression?

No

Last Working Version

No response

Additional Context

No response