I am thinking of adding python scripts for some data analysis but I am using a MERN stack for my application.
An example of what I am thinking-
My python script will do some data analysis when an endpoint is being called.
../api/dopythonhere and return a JSON object
What would be the best/efficient way to implement python with a MERN stack?
So as far as I understood you have currently an API or full-build functional application made in or partially coded in Python (unknown stack). Therefore you want to migrate this to MERN Stack or call the Python API via your MERN application. There are several things you can do to work with this, but those two might be the cleanest:
Completely migrate and integrate your Python app into your Node.js & Express app and forget about the Python source code.
If it's not already done, make the Python app a functional web API. Therefore you can call it either from the Node API using libraries like Axios or similar (so in your API you can modify the data structure and only send to the front what you need), or you can also call the Python API directly via React front-end, using web development vanilla APIs or any libraries you want.
Related
I'm trying to integrate backend code into a Wix site. Im not too picky about how I want to do this, or what language to write in (ideally, I have a locally-hosted Java code that I'd love to simply call). I wouldn't mind re-writing it in JavaScript though, or another language. But before I decide that I'm confused about my options. I can code but I'm new to the concepts like modules, APIs, & servers.
According to my research, back-end code with Wix is supposed to be easy (or at least do-able and not THAT complicated)....
From this webpage https://support.wix.com/en/article/corvid-calling-server-side-code-from-the-front-end-with-web-modules,
"Web modules are exclusive to Corvid and enable you to write functions that run server-side in the backend, and easily call them in your client-side code. With web modules you can import functions from backend into files or scripts in public, knowing they will run server-side. Corvid handles all the client-server communication required to enable this access."
And from this: https://www.sitepoint.com/what-is-wix-code/
"It’s serverless: All this added functionality comes in a serverless environment that lets you get your work done without any of the normal full-stack development headaches.
Just code and go: Wix Code has a built-in, online IDE and backend so you can just add the code you need to your page or your site, publish, and you’re live."
So, I thought they have a backend IDE where I can write backend code directly, or I could call my Java program. But, as I tried doing this and finding tutorials, it seems I can really only do this by calling a public API from the backend...?
https://youtu.be/tuu0D1izrUU
But ive also read (and someone who supposedly has done it before told me this) that Wix integrates with node.js, which is a backend version of JavaScript.
Can I use a Wix domain for a NodeJS app?
But, when I go into my Wix site I cannot find any option for using Node JS, and doing research on that gives me no useful results.
So, I'm thoroughly confused on what the capabilities are here. Can someone help me make sense of this?
Why are there no tutorials showing explicit code in the Corvid backend module? What's stopping me from simply writing my Java program there in a module? Do I really need an API endpoint to call and pass to the front end?
Is Node JS supported or not - has anyone done this before?
Also, in one link above they said everything is "serverless". But if I have to set up my own API endpoint won't I need to set up my own server??
There are basically two ways to go about this, which you seem to have already discovered.
Write your backend code in your Wix site. Indeed, the backend is built on Node.js as you can see here. Using this approach you will have to use JavaScript. As you seem to have found, you write this code in the Backend section of your site in a Web Module. Pros: you don't need to worry about managing a server and all your code is in one place.
Expose your already existing Java code as an API that your Wix site can call using the wix-fetch API. Pros: you don't need to rewrite your code.
I want to build a static web page based on python as server side and React for frontend on glitch online programming environment but unable to do .
I tried to implement by using CDN link but unable to use efficiently . Apart from this, I also wanted to use MATERIAL UI but according to there website it says
Using this approach in production is discouraged though - the client has to download the entire library, regardless of which components are actually used, affecting performance and bandwidth utilization.
Please elaborate steps to do the same.
Im sorry if that's too simple, but I managed to do it reading this article:
https://towardsdatascience.com/build-deploy-a-react-flask-app-47a89a5d17d9
I use the framework Flask, but if you are using Django the process must be similar.
But I recomend building a API with python and communicate with the front-end through the fecth API from javascript, or axios on react. You'll even be able to work on the frontend and backend in two different servers if you want.
Need advice on how to incorporate Python into an Azure ASP.NET web application environment. Please excuse this question but I am new to Azure and I'm not clear on how to proceed. Every option that I look into looks promising but they all seem to have their own issues. Below is a more thorough explanation but the deal is that I have an Azure account with all kinds of goodies, a full fledged ASP.NET (C#) web app running via App Service, I am new to Azure (but not Python), and I'm hoping to add Python functionality to this whole setup. In short:
I want to add Python to this setup mainly to run scheduled jobs and also to trigger Python code from ASP.NET web form submissions
ideally I want a solution that resembles a non-cloud setup. I know this sounds silly but I'm finding the cloud/Azure functionality to be nuanced and not straightforward. I want a place to put a bunch of Python scripts, run, edit, schedule and trigger them from ASP.NET
for example: I created a WebJob that runs manually and from the documentation it wasn't clear how it should be called. I just figured out that you need to POST with Basic Auth (and the credentials provided).
!Also, Azure CMD does NOT like files with 'underscore _' in them! You cannot submit a Web Job with a py file with an underscore nor can you write output with a file with an underscore
!Also, I don't see an option for this Web Job to run Python 3.6.4 (which I installed via extension). Right now it is using 2.7.15...
!Also, CRON expression in Azure has six *, not five plus a command. Again, more weird stuff to worry about
I tried these instructions but the updates to the web page's Web.config file breaks the ASP.NET web pages
ideally the most cost effective option
Any info is greatly appreciated
MORE DETAILED EXPLANATION
Currently I have an ASP.NET site running via Azure App Service and I would like to add Python scripts and possibly Flask/Rest functionality. Note that I am not expecting to serve any content via Python and will largely be running Python scripts either on a scheduled basis or call them from ASP.NET. As a matter of fact, and this is an important point, I'm hoping to have ASP.NET trigger/run a Python script when a web form is submitted. I realize that I could get a similar effect if I make a web call to a Rest api that is running Python. In any event, I can't tell if I should:
add a Python extension to the current App Service running the web page (I tried this) OR
I did install Python 3.6.4 and some packages via pip
These instructions were useful, however the updates to the web page's Web.config file breaks the ASP.NET web pages
set up a VM that will have all of the Python code (but how can I have the .NET web page(s) call the Python in the VM?) OR
use Azure functions (I'm completely new to this and must admit that I prefer to have my old school Python environment instead although I see the benefit of using functions. But how do you deal with logging and debugging?)
or what about a custom windows container (Docker)?
This requires installing VS Code and that is OK but I'm looking for a solution that another user can get into with as few interruptions as possible
The idea is to ramp up the use of Python although, like I said, I don't expect Python to be serving any of the web content. It will be used to run in the background and to run scheduled jobs. What is the most robust and hopefully easiest way to add Python functionality to Azure (most importantly in a way to be able to trigger/use Python from an App Service running .NET?)? I've searched online and stack overflow so far with interesting finds but nothing to my liking.
For example, the following link discusses how to schedule WebJobs. I just created a manual one and when I called the webhook I got the message: "No route registered for '/api/triggeredwebjobs/TestPython/run'" How to schedule python web jobs on azure
The Docker method looks very promising, however, I'm looking for a simple solution as there is another person who will be involved in all of this and he's busy with other projects
Thank you very much!
I found a solution, though I'm open to more info. Like I mentioned in my post, I used the 'add extension' tool to add Python 3.6.4 to my Azure (installed in D:\home\python364x64).
Then I installed a bunch of packages via pip, these installed into D:\home\python364x64\Lib\site-packages.
I created a Python folder in webpages\Python where I put my scripts.
Finally, in ASP.NET I used the Diagnostics.Process call to run my code in ~\webpages\Python\somecode_2.py
The main issue is that Azure came with Python 2.7.15 installed. And for some reason when my Python code got executed it was using 3.4 (where that version came from beats me). So for each script, I had to create an _2.py version where I simply did the following in order to call the original script via Python 3.6.4. Looks a little nasty but it works. So like I said, I would welcome more info for ways to do this better...
--
import os<br>
os.system("D:\\home\python364x64\python.exe SomePython.py {0}".format(add arguments here)
My background:
I am just starting to learn backend development with only 1 django backend created and deployed. I have solid experience with game development, architectures, algorithms, and various technologies and languages.
The Setup:
I have a python script (call it the solver), which runs a complex calculation of some data. I cannot modify the calculation script; I can only modify the way they are called. Currently it works by typing solver.py "params" in a terminal, which returns the calculation results in a file. I have modified this to work by calling a method execute() which returns the solution as string (or a json/yaml object).
The Task:
I need to create a very simple desktop offline application to call the solver and output the solution. The OS is unknown at this stage (possibly Windows). There should be no requests to a remote server whatsoever (otherwise it would be a simple task) and the application should be run from a single file (e.g. solver.exe).
Thoughts and Questions:
My first thought was to create a simple django/flask local server and an Angular frontend. I know building angular apps with electron is simple, but I have no idea how to include the django/flask local server, how to create one locally for that matter and how to bundle them together. If you believe this is the simplest way, could you point me to some tutorial/video/library/framework that I could follow or use?
Second thought was to just create everything with django, which also has frontend capabilities. In this case, are there any packages, that would help me build the application offline and for desktop?
Third thought (I would love it if this was possible) is to just create an Angular application, which calls the execute() method (or runs the file with parameters) and to build it with electron. If this was possible, I could build the application in a day, which would make the customer very happy. From my research, I couldn't find a way to make this work. Any suggestions?
Did you already look into ngx-electron?
You can access electron through angular and then call a ChildProcess on NodeJS to spawn/execute your command.
Include your script into the bundle, call it from the command using the information provided in the links above.
I have an application written in Python using numpy and OpenCV. Currently I am using OpenCV's GUI functionality; however, I'm finding it has various issues and behaves differently across platforms. I would like to build a browser interface. The application includes a live video feed and its state is updated about once every 1/15th of a second-- I would need the browser display to update at this rate. What is a good tool to accomplish this? I have built small apps in EmberJS but I think that getting it to communicate with Python is too much overhead.
You probably want to connect your app to a Python web framework like Flask so that you can make a restful interface. You could then build a frontend app in Angular or Backbone that queries the server for every update.