How to set an expiration date for a Python program?

Question

Python

I created a program I want to sell, but I don’t know how to sell the rental program, that is, after a certain time the program will not work and only I can renew it. What modules should I use for this?

Answer 1

Part of the functionality must be moved to the server. This is the only thing that can be done for python.
Or compile. And hope that the majority of users will be smart enough and paranoid not to run any rubbish from exchangers.

Answer 2

It is necessary to use date.time.
And for the first time launch to see the time.
And at each start to view how much time.
If 30 days have already passed, then the user will be prompted to pay

Answer 3

what modules should be used for this?

- Brains
First of all - nowadays you don't sell a PC program any more.
Secondly - you did not write the OS, on each OS this is done differently.
Third - look towards the web (Django, etc.)

Answer 4

Move everything to the server. Then it will be possible to restrict the rights at the user level. You can also obfuscate the code and encrypt it. At least I have seen encryption for php. Those. the user must download encryption tools to use the program. And already in the encrypted program, you can add any means of checking rights