EOLib

A core Python library for writing applications related to Endless Online.

Installation

pip install eolib

Features

Read and write the following EO data structures:

• Client packets

• Server packets

• Endless Map Files (EMF)

• Endless Item Files (EIF)

• Endless NPC Files (ENF)

• Endless Spell Files (ESF)

• Endless Class Files (ECF)

Utilities:

• Data reader

• Data writer

• Number encoding

• String encoding

• Data encryption

• Packet sequencer

Development

Requirements

• uv

Available Commands

Command	Description
uv build	Build package
uv run task test	Run unit tests with coverage
uv run task format	Format source files using ruff
uv run task format:check	Check formatting using ruff
uv run task typing	Check typing using mypy
uv run task docs:build	Build documentation using sphinx
uv run task docs:serve	Build and serve documentation using sphinx
uv run task docs:deploy	Build and deploy versioned documentation using sphinx
uv run task release:prepare	Prepare and tag a new release