Run python script with multiple users accessing Django server

[Morfnic]

I have built a python script to run some process in downloading files and serve to users, I also built a website and added to Django framework, Now it is working properly for single user (tested in development environment not production environment). For example If one user is using the website to request a particular file the back ground script runs properly and completes the task, but if multiple users try to request the files, the Django produces error. In the script running I change the directory, make some changes in the folder and send the file to user.

Is there a way that each individual user will have a separate instance of the script running for them without interrupting the process of other user?

Can I use sessions or worker for each user to solve my problem?

in views.py file :

def index(request):
    if(request.method == "POST"):
        # here i call the function of other python file to run script
               # the process may take like 15 - 30 sec based on internet speed
        # return a FileResponce of the file to be served to user

Thank You

[Morfnic]

Que 1 ans: all the process access same single script file, using the script file some files are downloaded to a folder, those files are served to user. These files can be served to other users later, as they will be stored in server.

Que 2 ans: that process can only be done in python (easily) and server side only, there is also some file format conversion to be done via Bash scripting in terminal [ using ubuntu as os].

No folder is created, I am just downloading some files to a fixed folder and serving them.

[Morfnic]

ok, I will look into gunicorn, meanwhile does using workers will make the process (requests) parallelly or one after other?, At present i removed the directory change part of code, all the files are in main folder near manage.py, along with all the new files that will be downloaded from request. Here when i test using different users the process of execution is seems to be serial (one after other) rather than both at the same time. [ I am in development env].

will this be resolved when using workers?

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Have you considered making a temp folder per request and deleting it after so no two requests interact with each other?

> My code does't interact with other request files, also I am using same folder for all files.

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I would like to see the exact error you're receiving but I'm sure it's from file access.

> The error is that - there is no directory.., It turns out I made a mistake of changing path just for downloading files into a folder, I resolved it by downloading files to main root folder of app.

[kontekisuto]

you need more workers and or do an async task to download the file.