Definition: '.py3.conf' stands for Python's default configuration file - .py3.conf, used by most Python interpreters. It defines settings such as runtime library versions, system path configurations, and more. Detailed definitions might include: - `runtime_library_versions`: This section sets default versions of the libraries you want to use in your project. - `system_paths`: Specifies the paths where files should be found on the local or remote systems. These can be adjusted using various commands or environmental variables (e.g., `$PYTHONPATH`, `$HOME/.pyenv/envs/...`) and are crucial for maintaining consistent behavior across different environments.