Tomixander 说:
The .pyc files are only deleted by 'build_module.bat' at the end of the compilation process.
These .pyc files are compiled Python files ; they are created during the mod's compilation (if all is allright in the mod Module System). You don't need them if you have the corresponding .py files (example : 'module_constants.pyc' = 'module_constants.py').
Sometimes, Python builds .pyo files (Python optimized files). This depends on your Python configuration.
Check your Module System folder to know if Python produces .pyc or .pyo files.
You can edit 'build_modules.bat' to change the line 'del *.pyc' to 'del *.pyo'.