pyodide | Python with the scientific stack | Binary Executable Format library
kandi X-RAY | pyodide Summary
kandi X-RAY | pyodide Summary
Pyodide brings the Python 3.8 runtime to the browser via WebAssembly, along with the Python scientific stack including NumPy, Pandas, Matplotlib, SciPy, and scikit-learn. The packages directory lists over 75 packages which are currently available. In addition it's possible to install pure Python wheels from PyPi. Pyodide provides transparent conversion of objects between Javascript and Python. When used inside a browser, Python has full access to the Web APIs. While closely related to the iodide project, a tool for literate scientific computing and communication for the web, Pyodide goes beyond running in a notebook environment. To maximize the flexibility of the modern web, Pyodide may be used standalone in any context where you want to run Python inside a web browser.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of pyodide
pyodide Key Features
pyodide Examples and Code Snippets
Lines of Code : 87License : Weak Copyleft (MPL-2.0)
Copy/* sw.js */
/* MODIFY IMPORT PATHS TO POINT TO YOUR SCRIPTS, REPLACE IF USING MODULE-TYPE WORKER */
// We're using the npm package xhr-shim, which assigns self.XMLHttpRequestShim
importScripts("./node_modules/xhr-shim/src/index.js");
self.XMLHttpRequ
Fetch and log data
// webworker.js
// Setup your project to serve `py-worker.js`. You should also serve
// `pyodide.js`, and all its associated `.asm.js`, `.data`, `.json`,
// and `.wasm` files as well:
importScripts("{{PYODIDE_CDN_URL}}pyodide.js");
async function l import collections
import gzip
import json
import pathlib
import sys
import types
from typing import Mapping, Union
from docutils.frontend import OptionParser
from docutils.utils import new_document
# Shim sphinx-js Python 3.10 compatibility
collec from collections import OrderedDict
from typing import Any
import docutils.parsers.rst.directives as directives
from docutils import nodes
from docutils.parsers.rst import Directive
from docutils.parsers.rst import Parser as RstParser
from docutils. from pygments.lexer import bygroups, default, inherit, using
from pygments.lexers import PythonLexer
from pygments.lexers.html import HtmlLexer
from pygments.lexers.javascript import JavascriptLexer
from pygments.token import Name, Punctuation, Text, Community Discussions
Trending Discussions on pyodide
QUESTION
I understand that with Pyodide I can:
A) install a pure Python package via micropip from PyPI or a URL to a .whl file
Example:
...ANSWER
Answered 2022-Jan-21 at 10:05Looks like it should work now.. I see, its added to the officially supported built-in packages.
QUESTION
I have a Python backend that generates public/private keys, generates a payload, then needs to get that payload signed by the client (ReactJS or pure JS), which is later verified.
The implementation in Python looks like this:
Imports
...ANSWER
Answered 2021-Dec-18 at 11:56CryptoJS only supports symmetric encryption and therefore not ECDSA. WebCrypto supports ECDSA, but not secp256k1.
WebCrypto has the advantage that it is supported by all major browsers. Since you can use other curves according to your comment, I will describe a solution with a curve supported by WebCrypto.
Otherwise, sjcl would also be an alternative, a pure JavaScript library that supports ECDSA and especially secp256k1, s.here.
WebCrypto is a low level API that provides the functionality you need like key generation, key export and signing. Regarding ECDSA WebCrypto supports the curves P-256 (aka secp256r1), P-384 (aka secp384r1) and p-521 (aka secp521r1). In the following I use P-256.
The following JavaScript code generates a key pair for P-256, exports the public key in X.509/SPKI format, DER encoded (so it can be sent to the Python site), and signs a message:
QUESTION
I'm trying to load xlsx files using pyodide. I able to load xls files correctly using the following code:
...ANSWER
Answered 2021-Nov-16 at 04:22So, I'm still not sure why directly read_excel or Excelfile functions don't work (especially since they just call openpyxl anyway), but I was able to get it to work by opening the file using openpyxl and then converting it to a dataframe. Working code below:
QUESTION
I am trying to use NLTK in browser, thanks to pyodide. Pyodide starts well, manages to load NLTK, print its version.
Nevertheless, while the package downloading seems fine, when invoking nltk.sent_tokenize(str), NLTK raises the error that it can't find the package "punkt".
I would say the downloaded resource is lost somewhere, but I didn't understand well how Pyodide / WebAssembly manage files. Any insights ?
Simple version:
...ANSWER
Answered 2021-Sep-02 at 14:53Short answer is that downloading files with Python currently won't work in Pyodide because http.client, requests etc require POSIX sockets which are not supported in the browser VM.
It's curious that nltk.download doesn't error though -- it should have.
The workaround is to manually download the needed resources, for instance, using the JavaScript fetch API as illustrated in this comment;
QUESTION
I want run funcion to stemm each row of a table. I want do it after of HTML code is loaded, I try this
...ANSWER
Answered 2021-Aug-31 at 00:45You are loading Pyodide multiple times by including the loadPyodide call in the main function, which gives an error for your subsequent main calls. Move loadPyodide outside main should resolve the issue:
QUESTION
I have been using Pyodide to run some python in my website. It has been working up until recently, however now has begin giving this error,
...ANSWER
Answered 2021-Aug-27 at 16:42You're probably using a newer version of pyodide. Since 0.18.0, you should use loadPyodide with the pyodide base url instead, which gives the pyodide object in the callback:
QUESTION
I've faced some interesting issue.
The problem is when I run the code snippet with pyodide and console is opened it works properly:
...ANSWER
Answered 2021-Jun-03 at 12:10Assuming you are using Chrome, it's very likely a bug in Chrome 89 - 90, which should be fixed in Chrome 91.
For more details see: pyodide#1507 and bugs.chromium.org#1200031
QUESTION
I am trying to run a simple pyodide example, but am not too familiar with javascript or pyodide and am not sure why the output is undefined. The statement is executed fine as I can see the correct output in the console log, but I cannot assign the output to the document.
here is the code
...ANSWER
Answered 2021-Apr-13 at 00:44Basically, you can implement your own function for printing. However, if you want to use exactly print you can override the function from JS:
QUESTION
I have pickled a SMS spam prediction model using pickle. Now, I want to use Pyodide to load the model in the browser.
I have loaded the pickled file using pickle.loads in the browser:
...ANSWER
Answered 2021-Mar-21 at 20:00It's likely a pickle portability issue. Pickles should be portable between architectures¹, here amd64 and wasm32 however they are not portable across package versions. This means that package versions should be identical between the environement where you train your model and where you do the inference (pyodide).
pyodide 0.16.1 includes Python 3.8.2, scipy 0.17.1 and scikit-learn 0.22.2. Which unfortunately means that you will have to build that version of scipy (and possibly numpy) from sources to train the model, since a Python 3.8 binary wheel doesn't exist for such an outdated version of scipy. In the future this should be resolved with pyodide#1293.
The particular error you are getting is likely due to scipy.sparse version mimatch see scipy#6533
¹Though, tree based models in scikit-learn at present are not portable across architectures, and so won't unpickle in pyodide. This is known bug that should be fixed (scikit-learn#19602)
QUESTION
Pyodide is working on iOS v13 and v14 but sometimes I get following errors on iOS v13.
It is out of memory errors. Current pyodide size is approx. 25MB. So, are there any way to get rid of these errors? How can I build for very minimum usage not for scientific projects to make it run on iOS v12 also?
Thanks
http://infinyte7.github.io/image-occlusion-in-browser/pwa/index.html
...ANSWER
Answered 2021-Mar-22 at 14:27sometimes I get following errors on iOS v13
You should open a Github issue about it. It's likely a bug somewhere. You could try building with TOTAL_MEMORY multiplied by 2, to see if it helps.
How can I build for very minimum usage not for scientific projects to make it run on iOS v12 also?
If you don't load those packages, they have no impact on the main pyodide package, which consists only of CPython + Python/JS type conversion code.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install pyodide
Use hosted distribution of pyodide: see using pyodide from Javascript documentation.
Download a pre-built version from this repository's releases page and serve its contents with a web server.
Build Pyodide from source Build natively with make: primarily for Linux users who want to experiment or contribute back to the project. Use a Docker image: recommended for Windows and macOS users and for Linux users who prefer a Debian-based Docker image with the dependencies already installed.
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