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EPL — English Programming Language

Write code the way you think. In plain English.

PyPI Stars License
pip install eplang

What is EPL?

EPL is a production-grade programming language where code reads like English sentences. It compiles to native executables via LLVM, runs on a bytecode VM, and transpiles to JavaScript, Python, Kotlin, and Swift.

Say "Hello, World!"

name = "Alice"
If name == "Alice" then
    Say "Welcome back, Alice!"
End

⚡ Key Features

🌐 Web Framework

Build production web servers with routing, middleware, CORS, sessions, WebSocket, and database integration — served via Waitress/Gunicorn.

⚙️ LLVM Compiler

Compile EPL to native executables and WebAssembly. Get near-C performance for compute-heavy workloads.

📱 Android & Mobile

Transpile to Kotlin and generate full Android Studio projects. Build APKs directly from the CLI.

🗄️ Database & ORM

SQLite, PostgreSQL, MySQL with a full ORM — models, migrations, relationships, query builder, and transactions.

🤖 ML & Data Science

Built-in wrappers for scikit-learn, PyTorch, TensorFlow, Pandas, and NumPy — train models in English.

🎮 Game Development

Create 2D games with Pygame-powered sprites, collision detection, scenes, and animations.

Quick Example: REST API

Create WebApp called app

db = db_open("todos.db")
db_create_table(db, "todos", Map with id = "INTEGER PRIMARY KEY AUTOINCREMENT" and title = "TEXT NOT NULL" and done = "INTEGER DEFAULT 0")

Route "/api/todos" responds with
    todos = db_query(db, "SELECT * FROM todos")
    Return Map with success = True and data = todos
End

Route "/api/todos" responds with
    body = request_body()
    db_execute(db, "INSERT INTO todos (title) VALUES (?)", [body.get("title")])
    Return Map with success = True
End

app.start(8000)

epl serve todo.epl
# Production server starts on http://localhost:8000

🚀 Get Started

  1. Install EPL — pip install eplang
  2. Try the Playground — No install needed
  3. Read the Tutorials — Step-by-step guides
  4. Browse Examples — Real-world projects
  5. Language Reference — Full syntax docs

725 Built-in Functions

EPL ships with 725 production-ready functions across 33 domains:

Domain Functions Highlights
Web Server 37 Routes, middleware, templates, sessions
Database 45 SQLite/PostgreSQL/MySQL, ORM, migrations
HTTP Client 8 GET/POST/PUT/DELETE with auto-JSON
Crypto 26 AES, SHA, bcrypt, JWT, HMAC
File System 33 Read/write, glob, walk, binary I/O
Networking 49 TCP/UDP, DNS, WebSocket, HTTP server
ML/AI 35 Regression, classification, neural nets
Data Science 47 DataFrames, plotting, statistics
Concurrency 98 Threads, channels, mutexes, barriers
GUI 37 Windows, buttons, menus, canvas
Game Dev 39 Sprites, collision, scenes, animation
Mobile 22 Android/iOS scaffolding

Full Standard Library Reference →