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I made a small script that solves an combinatorial optimization problem and I would like put it in a website so users can "play" with it, they could send a list of "points" to the server and this script would use a database to return the best combination of these "points".
The problem is I do not have much experience in web dev. I searched how to make an html button execute an script and I found this thread: https://stackoverflow.com/questions/48552343/how-can-i-execute-a-python-script-from-an-html-button#:~:text=To%20run%2C%20open%20command%20prompt,Hope%20this%20helpful.
But there says that an html button calling an python script is not safe. So what would be ideal What would be an ideal, safe alternative so that I could make sure that anyone who accesses my website can execute this script safely?
Well, there's no "easy" answer to your question. What you'd really need to do is to create a web-site in Python on your host computer – using a tool such as Django – and have one of the URLs supported by that website call your script.
Honestly, "what you're asking for here, really isn't the sort of question that StackOverflow is intended to answer." It's too big. Another one of the SE-family sites might be more appropriate, although I'm not quite sure which one ...
The solution that comes to mind would be setting up some Python-API (e.g. with Flask) which you could call with HTTP via JS, having different routes for different usages.
Here's a short overview of Flask showcasing how it could be used.
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I have a activity in school about how a hacker might hack your pc without knowing, I was assigned to make a self running file, what I'm trying to do is, when a person for eg. Downloads a file, then without he opening it should already run without even the user opening it. Is this possible?
This is not possible, not really actually.
If you want a file to be executed without the user executing it first after download, you will have to do one of such things:
Have an already running program on his machine that looks for your file and then executes it when he finds it in the downloads (MAGIC in the beginning of the file for example or hash validation).
Take advantage of a poorly protected software that executes other files or codes (Or override a standard library) file and make it run your code instead. of course this is not as simple as it sounds and requires you to understand the software that you are attacking pretty good.
Note: Most programs won't just execute some arbitrary code and probably wont just use execv for no reason or without making sure that everything is correct and protected, which makes that solution (Without finding a security breach in the software) pretty difficult.
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I am attempting to make a python a "buzzer" application which will function like the buzzers in jeopardy. It will (hopefully) work by linking several computers to a main computer. When a user taps the screen of their computer, if they are the first, it will change the color of their screen and alert the main computer. Now for my question: when module would be best to like together these two computer. I would need to send the name of the computer and a timestamp and the main computer would need to respond. I was reading that something like socket might work, but i am unsure. Also, could you please give me a link to documentation on whatever module you suggest. Thanks!
You mentioned socket in your question.
https://docs.python.org/3/library/socket.html
This might be appropriate for your needs, however with multiple clients it can get quite complicated.
Also, you may want to try using email for easier connections (if you don't mind the send time of a few seconds). I know it sounds stupid, but it has worked for me in the past, with significantly less difficulty than a multi-threaded socket connection.
https://docs.python.org/3/library/email.html
https://docs.python.org/3/library/smtplib.html
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So basically, what I want to do is have a user input some data in an HTML form or something (on client end). Have that data be carried over to a server, where the data is put through some python code and the processed result is sent back to the client. I know, I could use javascript to do this on the user side itself, but I want to experiment a bit and make use of some libraries like tensorflow, matplotlib and so on.
Also, is there some way, you know like Web Assembly to run python code on the client side. Like maybe, send data from server or have it fed by the user, and on some virtual environment type setup and processed ??
Note: I know flask exists and I've tried it, but I can't see the same flexibility as you know regular python code.
Thanks in advance 😊
There won't come a definite answer to your question because your question is too broad. But maybe this will give you some starting points.
I see you have two questions:
How can I use python server side
How can I use python client side
Question 1:
First of all you might know that it makes sense to perform operations on a server and not on a client. For example interacting with a central database.
Flask is already lightweight compared to Django which also uses python. If you really want to do a lot on your own you could take a look at websocket or common gateway interface (cgi).
Question 2: This is really not recommended but if you want to play around with WebAssembly and Python a good starting point is PyPyJs: https://github.com/pypyjs/pypyjs!
You can use Brython in the browser, it's pretty spiffy. Full dom-manipulation from python; fully compatible with libraries written in pure python. Really neat stuff.
As for the server-side, if you want to keep it full-python, you'll need to use something like flask, bottle, cherrypy, aiohttp,...
If you find yourself struggling; maybe try starting out writing a simple socket-based microservice? You'll then be able to either farm requests out to it from any other server; or incorporate the code in your (python) server code.
Good luck!
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I am presently working on a Raspberry Pi 2 running Raspbian Jessie membership registration kiosk our tech work-space. I have worked out most of the issues such as closing the browser, right-clicking, keyboard shortcuts, and secure login for admins.
The problem I've run into is that the website, that is not under my control, has links to outside websites that I don't want our users going to check the present URL make sure that it is the one approved URL and redirect if it isn't. I've researched doing this with software such as Privoxy and squid and also Python but so far haven't found anything that works. I am very new to Python though it seems the most likely solution, Privoxy just doesn't work, and it seems Squid really wasn't meant for what I'm trying to do.
The overall goal is to ensure a good, consistent interaction between the users and the kiosk so that we're not having to constantly reset the device and field questions like, "why doesn't it work?"
I'll keep searching and post anything that I find but thanks for your help.
One possible solution is to create your own web browser application. You can do this with Chromium Embedded Framework, which allows you to embed Chrome inside your application with only a few lines of code. CEF has Python bindings, if that's your preferred language. In order to restrict navigation, you would create a custom RequestHandler subclass and write an OnBeforeBrowse() function that prevents the user from navigating to external sites. Control is fairly fine-grained, so you can write different rules for handling iframe versus main window navigation.
You may also want to look at the LifespanHandler, which handles pop-up windows.
Be careful about purging data between user sessions, an easy way to do this is to terminate the application and restart it.
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I need to develop a code that causes a currently open application (running in the background) to perform basic tasks when a certain condition is met.
Let me explain through a random example…
Imagine I am working on a Microsoft word document and I want it to print exactly every 10 minutes automatically, i.e. without having to physically click the print button. What options do I have to implement something like this? Obviously gaining access to the MS word source code is an option, but is their an easier way…perhaps using a python script?
Thanks,
David
Microsoft Office products, as well as Internet Explorer and some other programs expose a Component Object Model (COM) interface. You can find more detail about COM and how it applies to Python here (including examples). They often expose every action you could do manually in the applications, but are aimed at automation and artificial input.
For a more generic application, you could work with sending messages. There's a Windows function called 'postmessage', and another called 'sendmessage' which have several wrappers in Python.
By the way, the MS Word source code is not freely available.