CUP (Common Useful Python): Building Reliable Python Workflows with Baidu’s Utility Toolkit

CUP is a Common Useful Python library that provides utility tools for building Python workflows, including features like logging, decorators, configuration management, caching, thread pools, and file handling. The library addresses real-world development needs such as monitoring, automation, concurrency, configuration management, and reliability checks. CUP's major subsystems include structured logging that writes to both files and stdout, decorators for creating singleton classes and tracking execution time, a nested configuration system that supports hierarchical settings and repeated values, and in-memory key-value caching with expiration support. The tutorial demonstrates how these modules work together in practical development tasks through code examples that show setup, usage, and round-trip configuration modifications.