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How to make a setup file which will install Python and dependencies on one's computer

I have been trying to package my Tkinter app. I tried Cx-freeze and Pyinstaller. I am having some troubles with correctly creating text files, writing into and reading from them. The app works fine when not converted into an exe but does not when converted. I am using absolute paths.
All this led me into asking this question:
Is there any way to create a setup file that, when run, will install Python (downloaded already) and .whl files of the dependencies? This way, the app will work on others computer in its original form.
My program is dependent on Tkinter, os, time, PyMuPDF, re, pandas and numpy.
Initially, I tried to work out a solution but could resolve [Errorno2] from pyinstaller. I searched the internet but could not find a satisfactory solution. I am really hoping to have a setup file instead.
I read this and this.

How to add a folder to Python path?

Basically, I can only reference my other files as modules when they are in a very specific location:
C:\Users\Dave\Desktop\Programming\Python.
If I want to create a new folder for a large project with multiple modules, say
C:\Users\Dave\Desktop\Programming\Python\Project1,
I can no longer import any modules and keep getting a ModuleNotFoundError. I've looked into it and it seems I need to add that folder to the Python Path somehow, but I couldn't find any answers on how to do it. My computer runs on Windows 10 if that matters.

I think the immediate solution to your problem/the answer to your question would be to use sys.path.append() at the top of your script.
import sys
sys.path.append("<ABSOLUTE/PATH/TO/YOUR/CUSTOM/MODULES/FOLDER>")
import custom_module
This isn't an ideal solution for any kind of prod use, however. Based on what you wrote in your question, this may not be what you're looking for. More info might help to craft a more stable solution:
Are you using virtual environments when running python? Do you just run python script.py or is there a specific version of python you're using that's installed elsewhere than the common C:\Program Files\Python?
When you say that you work on a project with multiple modules, does that mean there are custom modules that you/someone wrote or is it just that that project uses non-standard library modules, i.e. you had to pip install them?
Can we get an example of the code you're running and the folder structure of your project/where the modules are that you need?

Run Python Library as script

Some important background upfront, I am using a computer that does not give me access to pip. In fact I do not have access to the command prompt. This make is it impossible for me to install additional libraries unfortunately (at least the standard way).
My question is whether I can run a python library without formally installing it. Could I download the library, and then store it the same directory as my main script, and then import it like I would with a multi .py script project with functions being defined in other files, almost as if I had written the script natively on my computer?
Specifically, I would like to use pdfminer.six. Apparently it is written completely in python, however, I realize that may not mean what I think it does. It may be similar to numpy which I understand has C++ code associated with it.

You can import any script or lib from your current folder (example). You can find any lib you want by googling 'lib_name github'. Download the zip and unpack it in your folder, it should work.
You can also go to your python Lib folder on another computer and copy libs from there (By default: C:\Users\User\AppData\Local\Programs\Python\Python310\Lib)

Maybe you can use a web-based-interpreter solution like Google Colab and work in your browser.
https://colab.research.google.com

Using external modules in a Pycharm project

I am new to Pycharm and need some help. I am working on a project that makes use of a large library of modules (specifically, Schrodinger; which allows for a lot of cool chemistry programs). Schrodinger requires the use of Python 2.7, if that makes any difference.
There are too many modules to install to the project directory. When I move the project directory to the location of the modules, my script becomes stuck on 'initializing'. I have attempted to import it as a package to no avail.
I have also tried to use the sys.path command, however a lot of the modules make use of other modules as well. So I that has become a pain very quickly.
How can I use these modules within Pycharm? And if there is no easy way, do you have a recommendation for an IDE that does have this feature?
Thanks

Pycharm doesn't identifies user defined modules which are not imported to Pycharm.
I usually mask the module as a Sources Root see the picture for more details. if the modules are in same project.
Alternative way: In your case import the external modules using File -> Open modules with open -> open in current window -> add to currently opened project this looks like two different projects. Now you can mark Sources Root for the complete module (i.e. learning) which you have imported.
import stackoverflow
Now pycharm can identifies the user defined modules.

Python: Is it possible to create a package out of multiple external libraries?

This issue has been driving me insane for the past few days.
So basically, I'm trying to port over a Pure Python project to a proper PyCharm project. This is to basically improve code quality and project structure.
I wish it was as simple as basically creating a virtualenv to house everything, but it isn't. This project will eventually be developed simultaneously by multiple developers with Git as source control, and the default libraries will be modified. I presume this means that the libraries should ideally be tracked by Git in the end. Virtualenv shouldn't help here as far as I know because it's not portable between systems (or at least that's still being tested).
This project will also be, in the future, deployed to a Centos server.
So the only plan I can think of to successfully pull off this would be to simply bring in all of the libraries (which was done using pip install -t Libraries <ExampleLibrary>) into a single folder, with a __init__.py inside, and use them from other python files as a package within the Pycharm project.
Is this possible / recommended? I tried various methods to reference these libraries, but they all don't work during runtime. Somehow when the files in the library import something else from their own package, an ImportError is raised saying that there's no such module.
Will accept any other suggestions too.
Using Pycharm Community Edition.
EDIT: After having a good night's rest I think the crux of the issue is really just project organization. Before I ported it over to Pycharm the project worked as expected, but this had all of the python files in the root directory, and the libraries in a subfolder of the root, with every project file having the same boilerplate code:
import os, sys
absFilePath = os.path.dirname(os.path.abspath(__file__));
sys.path.insert(1, absFilePath + "/lib")
I was hoping that by using Pycharm to help me flesh out the packages, I could avoid having repeated boilerplate code.

Note: Not full solution.
The addition of the template code below forces the file containing the code to be in the same directory as the libs folder.
For Pycharm, all I had to do was mark the libs folder as a source folder. Even with the addition of the template code to the file, the modified libraries still work as expected.
For the Python Shell, this template code is still needed:
import os
import sys
absFilePath = os.path.dirname(os.path.abspath(__file__))
sys.path.insert(1, absFilePath + "/lib")