I have a python script that I want to make accessible through a website with an userinterface.
I was experimenting with Flask, but I'm not sure this is the right tool for what I want to do.
My script takes userdata (.doc/.txt files), does something with it and returns it to the user. I don't want to save anything and I don't think that I need a database for this (is this right?). The file will be temporarily saved on the server and everything will be deleted once the user downloaded the modified file.
My webhosting provider supports Python and only accepts CGI. I read that WSGI is the preferred method to use with Python and that CGI has scaling issues and can only process one request at a time. I'm not sure if I understand this correctly. If several users would upload files at the same time, the server would only accept one request or overwrite previous requests? Or it can do one request per unique IP address/user?
Would CGI be ok for the simple get/process/return task of my python script or should I look into a hosting service that uses WSGI?
I had a look at Heroku and Render to deploy a flask app, but I think I could do that through my webhosting provider I guess.
For anyone interested in this topic,
I decided to deploy my app on render.com, which supports gunicorn (WSGI).
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I would like to run a couple of very simple Python 3 scripts on the web. As an example, say, the script just reads certain parameters from the URL, sends an email and prints out a simple HTML page saying "success".
I have a virtual private server with Nginx, so I am free to setup the best framework.
My question is: what is the state-of-the-art setup to do this?
More particularly: what do I need to install on my server for Nginx and what do I use in my Python scripts for e.g. reading the URL content? My idea is, that once the server setup is done, I can just put any new script_xy.py file into some directory and it can be accessed using the URL of the script, without a full blown deployment for each script.
Flask If I were to use Flask (or Django), each new script would need its own, continuously running process and its own Nginx setup. That seems like a total overkill to me. Another alternative is web2py, is it the same here or would that be an idea?
CGI 20 years ago I used to program such simple things as Perl scripts using CGI. I read this can be done in principle with Python, but CGI is slow. Then there is Fast CGI. However, my impression was that this is still a bit outdated?
WSGI WSGI seems to be the state-of-the-art alternative to CGI for Python. What python modules would I need to import in my script and what would be the setup for Nginx?
Something else? As you see, I might just need a few hints on what to search for. I am not even sure if I need to search for "Python web framework" or "Python server" etc.
Any help is greatly appreciated.
Thanks a lot for your ideas!
juxeku
I have been developing a Python app that serves a React frontend with server-side rendering.
Locally, this has worked fine as I'm able to run two servers on separate ports to handle different parts of my application. My Python backend receives the initial request and then sends an http request to my Node.js server which does my server-side rendering. The result is then sent back to my Python backend which injects the server-rendered frontend into the HTML which is sent to the client.
However, Heroku limits applications to a single, dynamically generated port. This limits me to only running one web server which means I'm no longer able to run my Node.js server to do my server-side rendering. I have thought of some gimmicky ways to make this work, but I don't want to have to create an entirely new app on Heroku just to run the Node.js server I need.
I'm not sure how I can make this work with these limitations in place so I'm hoping I can learn some alternative ways to make this work on Heroku. What are some viable workarounds to handle this problem?
I think you need to create to separate apps on Heroku(even though you don't want to), as far as I know there's no other available options on Heroku.
I use Heroku for a SSR application running on two apps. One for frontend(react) and one for backend(nodejs). Works like a charm
So I'm using Flask for a website and I'm using the extension Flask Mail to send emails for me. Unfortunately, my email server doesn't support CRAM_MD5 (for a valid reason) so when smtplib.py (Python system library file) reaches the line that is:
preferred_auths = [AUTH_CRAM_MD5, AUTH_PLAIN, AUTH_LOGIN]
it uses CRAM, and fails because of an authentication error. On my development server, I just edited the file and switch the order of PLAIN and CRAM and faced no problems. My system admin doesn't want to make this change every time he does a server build if he can help it so I was wondering if there was a way I could overwrite that system library variable from my Flask application? My Flask application is a little large so if there is a way to do this, I can post a structure of my application. I mostly want to know if it is possible to overwrite variables in system libraries and if so, the standard procedure for doing so. Thanks!
while I have quite some python experience, I've never used it for web and I have vast amount of web experience with PHP.
Now I want to create a simple python script (lets call it service.py) that runs on example.com. I installed mod_wsgi as suggested by the docs, my web server is Apache 2.2, the mod_wsgi is loaded successfully.
How do I configure my web server/mod_wsgi so that requests comming to example.com/service are processed by service.py?
Then how do I access the request params (like $_GET, $_POST, $_FILES) from the python script?
With mod_wsgi, you configure which URLs are served by setting WSGIScriptAlias. Your script, though, needs to be an actual WSGI application, which exposes an application variable which is called by the server.
I suspect it'd be easier to configure your script as simple CGI. You can then use the cgi module from the standard library to access your request params (note, though, that the examples you give are PHP-specific: they're accessed differently in Python, depending on the specific framework).
Another alternative would be to use a mini-framework like Flask, which would encapsulate all this and give you a simple interface to use in your service.py script.
Hi recently created my website in django. And I have used a web hosting provider who has django, python and my sql installed. But they do not have the ssh option or command prompt in their file manager. How can I use a script to excecute all the commands after uploading my site to the server .
I want file to be created like this updatedb.sh or updatedb.py .
Can anyone tell me how to use the scripts alone to host my django site live.
It is possible to have your Django views execute lines like:
import os
os.system("python manage.py syncdb")
In theory you could get the site working like that. However, this is a very poor strategy for deployment. Aside from the hassle of having os.system lines every time you want to do anything, what will you do if your entire site breaks? You'd be using convoluted hacks just to do the most basic maintenance.
If your web hosting provider truly doesn't support any kind of command line or even give you other options for setting up Django, it's time to find a new web hosting provider. I might recommend heroku, which supports Django and lets you deploy using git. (It is also free up to a certain amount of use).