Install and execute python3 inside one same independent folder

Question

I have a small program written with Python3 that I'd like to install on friends computers. The main issue is that not every computer has a Python3 installed on it (mostly Python2-). Do I have to install it on each computer I want my program to run?

I thought it would be possible to install Python3 inside a separate directory, as shown below.

Then, I would be able to use a shebang to run the right version of Python installed inside myProgram folder.

#!C:\myProgram\python3 python

# Test
a = input('Entrer un nom:')
print(a)

When I double-click on myProgram.py file, a window opens and closes immediatly...

Is this a bad idea or not? Is there a way to achieve that differetnly if so?

Answer 1

You could create an executable from the python script rather than installing all of python 3 on their machine. There's a few ways you can do it, see this answer.
I'd have a look at pyinstaller.

Answer 2

Add Python 3 to your friends machine to execute your program. What'is the utility to run such a small program on their computers?

Answer 3

The way you propose won't work.

1. Windows does not know about shebangs.
2. Even if it did, this one would only work if a user installed the program to C:\myProgram (which is not a really appropriate place, and the user might not have the rights to install it there).

There are ways to make a python program portable w/o having the need to have a Python runtime installed. Alas, I currently don't know their name.

Or, if that is feasible, install Python 3 on their machines, but I don't know if that might break any programs wanting to use Python 2.

Answer 4

There're different tools which can pack you program to single .exe file or make an installer. Here's my solution from 2016 year - Python - create an EXE that runs code as written, not as it was when compiled

Now it will be little easier :)