greenlet

Greenlet

Greenlet is a lightweight concurrency library for Python that allows users to switch between several green threads (coroutines) in a similar way to yield statements. It enables non-blocking cooperative multitasking in Python programs.
Development Python Libraries
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concurrency coroutines multitasking
Greenlet alternatives ➤

Greenlet: Lightweight Concurrency Library

A Python concurrency library enabling non-blocking cooperative multitasking, allowing users to switch between green threads (coroutines) like yield statements.

What is Greenlet?

Greenlet is a lightweight concurrency library for Python that enables programmers to switch between several coroutines (green threads) in a similar way to yield statements. Unlike operating system threads, green threads are managed in userspace instead of kernel space, enabling non-blocking cooperative multitasking in Python programs.

Some key capabilities and benefits of Greenlet include:

  • Lightweight coroutines - Greenlets are very memory efficient and lightweight compared to OS threads.
  • Cooperative multitasking - Greenlets allow execution to be switched between coroutines cooperatively, avoiding complexity of preemptive multitasking.
  • Synchronous programming style - Code written with Greenlet looks synchronous and sequential while allowing concurrency.
  • Stack preservation - When switching execution between greenlets, their stack frames and states are preserved.
  • No need for queue handling - Messages can be passed directly between greenlets instead of using queues.

Greenlet is useful for programmers writing networked servers, protocols, GUI applications, simulation systems, game engines, and other programs that require non-blocking concurrent operations. It works well with other Python libraries like gevent for asynchronous I/O. Some common applications of Greenlet include high-performance networking, real-time analytics, financial trading systems, etc.

Greenlet Features

Features

  1. Lightweight concurrency library
  2. Allows switching between green threads (coroutines)
  3. Enables non-blocking cooperative multitasking
  4. Similar to using yield statements for cooperative multitasking

Pricing

  • Open Source

Pros

Lightweight and fast

Simple API

Integrates well with Python generators

Can prevent blocking I/O calls from blocking entire application

Cons

Not true parallelism like with threads or processes

Requires restructuring code to use coroutines

Debugging can be more difficult than with threads

Official Links

Official Website
https://github.com/python-greenlet/greenlet

The Best Greenlet Alternatives

Top Development and Python Libraries and other similar apps like Greenlet

Here are some alternatives to Greenlet:

Socket.io icon
Socket.io
JsSIP icon
JsSIP
WebSocket-Node icon
WebSocket-Node
Bone.io icon
Bone.io
Eventlet icon
eventlet
Gevent icon
gevent
Suggest an alternative ❐

Socket.io icon

Socket.io

Socket.io is an open source JavaScript library that enables real-time, event-based communication between web clients and servers. It uses the WebSocket protocol to provide full-duplex, bidirectional communication channels over a single TCP connection. The key features of Socket.io include:Real-time messaging - Socket.io enables messaging between clients and servers with minimal...
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JsSIP icon

JsSIP

JsSIP is an open source JavaScript library that enables real-time communications over the SIP protocol directly from web browsers. Developed specifically for web developers, JsSIP allows integrating voice, video, chat, and presence into web applications with just JavaScript and web APIs.Some key features of JsSIP include:Supports SIP over WebSocket, making...
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WebSocket-Node

WebSocket-Node is a popular open-source WebSocket library for Node.js applications. It provides a complete WebSocket client and server implementation for building real-time, event-based apps.Key features include:Supports the WebSocket protocol for full-duplex communicationAutomatic ping/pong handling for keepaliveFrame and message handling with support for binary dataCompatible with most WebSocket capable browsersExtensible and...
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Bone.io icon

Bone.io

Bone.io is an open-source web-based wireframing and website mockup tool. It provides a simple drag-and-drop interface that allows users to quickly construct the basic wireframes and layouts for websites and web applications.Some key features of Bone.io include:Intuitive drag-and-drop editor for adding and arranging elements on pagesLibrary of common components like...
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Eventlet icon

Eventlet

Eventlet is a concurrent networking library for Python that allows developers to easily write highly scalable network servers. It uses cooperative multitasking and coroutines to provide a high-level synchronous API on top of asynchronous I/O. This makes it easier for developers to write concurrent and parallel code without having to...
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Gevent icon

Gevent

gevent is a Python networking library that provides a high-level synchronous API on top of libev's asynchronous event loop. This allows developers to write non-blocking network applications in Python using a synchronous coding style.Some key features of gevent include:Fast event loop based on libevLightweight execution units (greenlets) to provide pseudo-concurrencyAPI...
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