wotpy 0.14.0

Python implementation of a W3C WoT Runtime and the WoT Scripting API

WoTPy

Introduction

WoTPy is an experimental implementation of a W3C WoT Runtime and the W3C WoT Scripting API in Python.

Inspired by the exploratory implementations located in the thingweb GitHub page.

Features

• Supports Python 2.7, 3.6 and 3.7.
• Fully-implemented WoT interface.
• Multicast discovery based on mDNS.
• Asynchronous I/O programming model based on coroutines.
• Multiple client and server Protocol Binding implementations.

Feature support matrix

Feature	Python 2.7	Python 3	Implementation based on
HTTP binding	:heavy_check_mark:	:heavy_check_mark:	tornadoweb/tornado
WebSockets binding	:heavy_check_mark:	:heavy_check_mark:	tornadoweb/tornado
CoAP binding	:heavy_multiplication_x:	:heavy_check_mark:	chrysn/aiocoap
MQTT binding	:heavy_multiplication_x:	:heavy_check_mark:	beerfactory/hbmqtt
mDNS discovery	:heavy_multiplication_x:	:heavy_check_mark:	jstasiak/python-zeroconf

Couroutine APIs

WoTPy is based on the Tornado Framework. Users therefore have two different API options to write code based on coroutines:

• Users on Python 3 may use the native asyncio module. This is, in fact, the recommended approach. It should be noted that Tornado on Python 3 acts basically as a wrapper around asyncio.
• Users on Python 2.7 are restricted to writing Tornado coroutines (asyncio is not available on Python 2.7).

ToDo

• Add missing sections to docs and deploy on a public site.
• Subscription to Thing Description changes.
• Validation of data schemas.
• Enable Action handlers to return Observables.
• Update protocol bindings to accept event subscription and cancellation data.

Installation

pip install wotpy

Development

To install in development mode with all the test dependencies:

pip install -U -e .[tests]

To run the tests in all supported environments:

WOTPY_TESTS_MQTT_BROKER_URL=mqtt://broker-url tox

Docs

Move to the docs folder and run:

make html

If you attempt to build the docs on a non-Linux platform or with Python 2.7 _autosummary will complain about being unable to import the unsupported modules (e.g. MQTT on Python 2.7). In this case the docs will be missing the sections regarding unsupported features.