Search results
It's a bi-directional bridge that lets you use JavaScript code from Python, and vice-versa. That means that Python code can call JS callbacks, and JS code can call Python callbacks. Access Python from JS, numpy + matplotlib example, with the ES6 import system: import { py, python } from 'pythonia'.
- Python in the browser, precompiled for speed: https://www.transcrypt.org
- Readability
- Main differences with CPython
- License
- How to contribute
- Deployment testing
- What's new in the latest commits
- Other packages you might like
•Precompiled into highly readable, efficient JavaScript, downloads kB's rather than MB's
•Multiple inheritance, optional operator overloading, metaclasses, async/await, properties, decorators, hierarchical modules etc.
•Seamless integration with the universe of high-quality web-oriented JavaScript libraries, rather than the desktop-oriented Python ones
•Pure Python 3.9 syntax, using Python's native parser
•Debug directly from Python sourcecode, through integrated sourcemaps
•Generates JavaScript for humans, resembling the Python source line by line, optionally annotated with source line numbers
As can be seen below, there's a simple parallel between the Python and the JavaScript code. In combination with the use of sourcemaps, this enables efficient debugging. Also, code can be tested from the command prompt using stubs.
Classic OO with multiple inheritance in JavaScript
•Web batteries: Seamless access to any existing JavaScript library has been favored over inclusion of many Python libraries in the distribution. There are some exceptions to this rule, e.g. math, cmath, random, itertools, re, time, datetime and turtle, and some more may follow, but in general the accent is on libraries that are relevant in the browser.
•No eval and exec of Python code. This is again part of the concept. Transcrypt code is compiled, optimized and minified in advance to warant fast page loads. In this respect its design goal is fundamentally different from tools that compile on the fly in the browser. Transcrypt is targeted towards building professional, extensive, real world web applications that load and run as fast as their JavaScript counterparts, but offers Pythonically clean, modular structure and maintainability.
Copyright 2014 - 2023 Jacques de Hooge, GEATEC engineering, www.geatec.com
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
Transcrypt started out as a personal repo, owned by Jacques de Hooge. As the project caught on and the number of people contributing issues, ideas and code grew, the repo was transferred to the QQuick organisation, to be able to form a developer team on GitHub. Then more recently, to insure its continued development, the GitHub repo has been moved to TranscryptOrg, where Transcrypt and related projects can be more centrally located.
There was also a clear message in this: Transcrypt isn't owned by anyone in particular. It is the collective property of everyone using it or contributing to it. At the same time the need was felt to keep a very firm grip on code quality, especially of the core.
Everything under ../transcrypt/modules/org/transcrypt plus the file ../transcrypt/__main__.py is considered to be part of Transcrypt's core. A major design goal is to keep the core small and fast. This means that some CPython facilities were deliberately left out or simplified. Core development is still mainly done by Jacques, but with the input of many great ideas submitted as issues. If you want to improve something in the core, this is best initiated by first opening an issue for it. Opening a pull request directly can lead to disappointment, although all effort is made to take good ideas seriously.
All other parts of Transcrypt are referred to as periphery. While a good quality pull request for the periphery stands a reasonable chance of being accepted, still it is wise to start an issue beforehand, allowing coordination and preventing waste of effort.
A special place is taken by implementing standard libraries. While Transcrypt mostly relies on browser-centric JavaScript libraries, availability of a limited number of standard libraries will help acceptance by Python programmers. So you're most welcome to make a contribution here. The design goal again is: better 90% complete, fast, small, and reliable, than 100% complete, slow, bulky and buggy. If you contribute a library, please also contribute an autotest (see docs) and some documentation for it. The supported platforms are Windows and Linux (and, with that, OSX).
While being open and respectful to any good ideas, the final say as to what gets in and what doesn't, is with Jacques. So this is a dictatorial rather than a democratic project. Being a sailer himself, Jacques values the notion of having one captain on a ship. The captain doesn't own the ship, but he serves the passengers by consulting with the crew and plotting one stable course.
The full set of testlets is described in the documentation and comes with the distribution. Each release is preceded by at least the following tests:
•The automated back to back test described above, not only on Linux but also on Windows and, in case of relevant issues, on OSX.
•Automated compilation of the manual tests, human exercising of the resulting applications and a visual check of the results.
•Automated compilation of the demo's, human exercising of the resulting applications and a visual check of the results.
•Code generator adapted to Python 3.9 parser
•Updated README and packaging configuration
•Numscrypt - port of a microscopic part of NumPy to Transcrypt, using JavaScript typed arrays: https://github.com/QQuick/Numscrypt
•SimPyLC - PLC simulator with Arduino code generation: https://github.com/QQuick/SimPyLC
Examples. The following are examples of code conversion from Python to JavaScript using this converter. Note that you may not always get the same code since it is generated by an AI language model which is not 100% deterministic and gets updated from time to time. Example 1 - Is String Palindrome.
The Transcrypt Python to JavaScript compiler makes it possible to program lean and fast browser applications in Python. Transcrypt applications can use any JavaScript library and can also run on top of Node.js or be used in combination with Django.
1. Option: ECMAScript version: This tool allows to convert Python to javascript online. You can get the js code (ES6 or ES5) corresponding to your Python code. You can see the user guide to help you. User guide. How to convert Python code to Javascript: Fill in the editor above with your Python code.
Dec 12, 2023 · Here are the steps to transferring Python to JavaScript: STEP 1: Install a Source-to-source compiler for Python to JavaScript. STEP 2: Browse to the folder holding your Python script...
People also ask
How to convert Python code to JavaScript?
Where can I write a Python code to JavaScript?
How do I transfer Python to JavaScript?
How to use JavaScript in Python?
Does js2py support JavaScript?
What is pyscript in JavaScript?
Mar 21, 2023 · JS2Py supports a great deal of cross-interoperation between Python and JavaScript. You can import existing Node.js modules in your Python code, by way of a js2py.require method. Variables from...
