Elpy is an Emacs minor mode that provides a full-featured Python IDE within Emacs. The Python backend (elpy/ directory) implements a JSON-RPC server over stdin/stdout, using Jedi for static analysis (completions, definitions, calltips, refactoring) and external tools for formatting (autopep8, yapf, black) and linting (flake8). The Emacs Lisp frontend (elpy.el and related .el files) defines the minor mode, keymaps, modules for company-mode, eldoc, flymake, yasnippet, pyvenv, and more. The architecture is modular: each feature (completion, folding, multiedit, testing, debugging) is encapsulated in a module that can be enabled/disabled. The project is currently unmaintained with high technical drift due to dependency on evolving Jedi API and deprecated Emacs constructs.