PyScript – Run Python in the Browser! THE END of JavaScript???
- June 5, 2024
- Posted by: MainInstructor
- Category: Assembly BASIC Data Science Go JavaScript MATLAB Node Python Web Development
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Video Title: PyScript – Run Python in the Browser! THE END of JavaScript???
last weekend there was a huge announcement for the python and web development world this is pi script which allows you to run python in your html code and this is super simple to set up so this is a super exciting project and today we have a first look at it pi script gets developed by the people from anaconda and now before i show you how to use it let’s quickly go over the features that pi script offers first of all it allows us to run python in the browser so it enables drop in content external file hosting and application hosting without the reliance on server side configuration so this is just html in the end then we can use the whole python ecosystem so of course we can use all core modules but we can also run many popular packages of python and the scientific stack such as numpy pandas scikit-learn and more this is super cool for machine learning and data science websites for example we can very easily show matplotlib in the browser then we can combine it with javascript so we have a bi-directional communication between python and javascript objects and with this we can for example very easily run a mario game in the browser which i show you at the end then we get environment management so it allows users to define what packages and files to include we get a visual application development so we can use readily available curated ui components such as buttons containers text boxes and more and we have a very flexible framework so a flexible framework that can be leveraged to create and share new pluggable and extensible components directly in python so this all sounds super exciting and now let’s have a look at how to use it so let’s have a look at how to get started so we could download it and compile it ourselves so for this we need node.js or we can simply click on install and then we get just kidding you don’t need to install anything so we just have to include one css file and one javascript file and this is hosted for us so we can copy this and then here i have a basic html code and in the head section we now paste this in so here we have the link to the style sheet which is a css file and then we include the script so this is pi script dot js and now if we go back to the website we can grab this example script so now in the body here we can start the pi script element and now here we can have any python any python code that we want so for example here we say print now you can and then we have the closing tags and this is all that we need so here i have visual studio code and i have the live server so now i can click on go live and this should start a website and now here we have the pi script tests and now you can so it’s printing what i print here so this is how to use it now let’s have a look at a few more examples and you also find them on the official github repository so this is open source and there you find a cool getting started markdown file that you can check out so now let’s insert another pi script element and here we can define a function for example where we compute pi then we return pi then we call this function and then again we print the result so now let’s save this and then go back to the website and if we refresh this then here we see pi is approximately 3.142 so this works as well so here are a few more examples so this is how we can set a html element afterwards so we can give it a id for example today and then in a pi script we say pyscript.write and then we use this id and here we write the date of today so then here we again write the variable of pi which is defined here and for this we use a diff with the id pi and we also give it a class for styling so for this i included another script which is using bootstrap so now this is a class from bootstrap and then let’s also see how we can use matplotlib and how we can use a local file so in order to use this in the top we define the pyent and here we define all the libraries we need so the scientific libraries like numpy and matlab clip are already included so we just have to list this here then we can list the paths and here we can list all the files that we want to include so here i created a local file data dot pi that is using numpy and is creating two random arrays so now um let’s again create another um pi script and here we have a new div with the id plot and here we say output is plot so this is where the plot will appear then we can import the libraries like in normal code we also import our function from the local data file then we create our data and then we say plt dot subplots and and do what we want with matplotlib and then here we simply list the figure and now if we save this and go back to the file then this might take a few moments so it’s still not the fastest but now here it works so here we have again this pie with a different styling and here we have our mud plot lip plot so yeah super cool now i want to show you one more cool feature and this is how easily we can use a rebel on our website so for this we just include this pi rebel element and give it a id and then we can say auto generate equals true and if we refresh the website then here we have a wrapper and here we can run any python code that we want for example again print hello world and then i press shift enter and then it gets evaluated and here we see the output for example i can also import a module and then print um let’s say random rand in between 1 and 10 and then again shift enter and then here we have an output so this is super cool how easy we have a dynamic rapple on the website so how does this work for this i recommend to visit the anaconda engineering blog so in this post they go a little bit about what and why and then they go over the stack they use and basically they build on top of an existing ecosystem the main magic behind this is web assembly so if you don’t know what web assembly is then i’ll have a link below the video so you can learn more about this then they use emscripten which is an open source compiler toolchain to web assembly and pyodide which is python implementations compiled to webassembly this is another cool open source project that makes all of this possible so shout out to them and yeah so this is in a very early stage and so is pi script so this is still in alpha so very early so it’s exciting what will come in the next weeks but yeah let me know in the comments what you think about this and now finally let’s play mario so yeah mario also is available in the pi script repository under the example so here you can check this out and here you see that it combines the pi script python code with javascript files this is super cool let me know if you also check it out and then i hope to see you in the next video bye
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Can you make a video on how to convert outlook emails in to HTML file using python
I use wordpress custom html block to add calculator any other thing that I built using html, css and js code. Now can we use pyton code also in wordpress?
You have no idea how JS works for UI if claiming that Python will replace it, as expected from YouTubers who don’t have practical knowledge about software development, only how to make clickbait titles..
Please get a one inch mustache
i like the concept and will be attempting to implement it on my website in the near future, excellent introduction
Ich rieche deutsch
Didn't work for me. Can you help me?
Great ! Thank you !!!
Good bye Javascript, Python is awesome.
Amazing tutorial, I spent 30 mins finding a tutorial that actually works. You are immensely underrated.
"Very nice how much" Borat 😂
My question is… what can py do for me that java can't?
So then it's js anyway. Without js package this is not working. Idea is good, but still way to go.
why do u talk like a Gay prsn ??
Can anybody get the Mario to work now? I tried but I´m receiving an error. I've just copy-past the HTML file from the documentation
can it run pygame?
my website asks to Download pyodide and it gets stuck there
Amazing
There is hope afterall!
The interesting point's here:
For using python in html, we have to use JavaScript 😁
JavaScript is a LEGEND !
I believe they should name it
pyhpy instead of py-script because the functionality is very similar to php
Like print() in py-script is almost identical to php echo because they just slap text in html
One question. Why?
No but please, stop putting python and js in places where it does not belong….
do you know how to include other library that special means need to install first
hahahahahahahahaha
"The end of Javascript". For educational purposes, if you remove the V8 runtime from your browser your script will no longer work. The video is intuitive despite the title, don't do this.
It has already been demonstrated many times by many contributors of Python, Chromium and Mozilla that Python is not suitable for the Web. Anyway, people are used to using JS which is undoubtedly the language of the Web and will never be replaced simply because it would break more than 3/4 of the current Web. Also, the V8 JIT compiler performs better than the Python one, I base this on my own tests as a JIT compiler developer. And it is optimized for the web to reduce the memory footprint, unlike Python which was not designed with this in mind.
If you want to use Python on the Web only because you miss Tensorflow and Keras, either follow the documentation and install them locally, or wait a few months until the GPU Web API and other machine learning APIs are available on Chrome. This will be much more efficient than using a port of the Python runtime in WebAssembly. At least 10 times more.
Sure pyscript will be the end of javascript
Can you run this on iPad.
I'm interested in your demonstration codes. But I don't know how to get the exact code you typed in the video clip here. Please let me know if you have extra moments. I like your works.
Can it work with ursina?
Can someone help me with this? Um… when I use pyscript with html and then run the program, it doesn't show the output,
It just shows the python code. Like it will just display print ("hello world") instead of "hello world". If someone can help me fix this that would be great. I'm on windows.
I have a multi files script to run and I need to import pygame. Can I do it with this method ? In fact, I'm trying to make a chess game on my wordpress website, and I don't want to pay €40/month to use their python plugins
how to I run my auth.json file variables in pyscript?
Can we install python libraries on it? ?
😁 Really???… See all Python gangs getting excited. You really don't know much about the web, do you? You'll still have to write JS if you wanna build serious Web Apps. Pyscript just takes care of Logic. Tell me, how would you work with WebAPIs? The W3C has its implementation fully in JavaScript and that's what actually powers web applications, to be more precise, that's how the web communicates with the hardware.
This looks incredible!
where can i find mario game in html ?
About time there was a true Javascript alternative…. damn web browser creators… But I would be happier with VBScript…
Thanks for sharing the basic ideas of Pyscript. Can you please also share how did you load Mario game environment using Pyscript?
thanks for your work!💗 (:
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