Hello. This is my first blog post.

I have created a tool that combines Python packages that exist in separate files into a single source. This tool allows you to import and use libraries for competitive programming in the same way as common packages (like numpy).Similar tools are webpack and oj-bundle.

• github: https://github.com/bayashi-cl/expander
• Example of a submission using this tool(AtCoder): https://atcoder.jp/contests/abc238/submissions/29410034

By the way, in the code generated by this tool, the definitions of functions and classes in the library are expressed as "strings". I think that this may violate the rules against obfuscation (Can-do's and Can't-do's 4). Can the code generated by this tool be used in the contest? I would like to hear your opinions.

Thank you very much.