From a post on StackOverflow at https://stackoverflow.com/questions/5458048/how-can-i-make-a-python-script-standalone-executable-to-run-without-any-dependen
Here is the relevant text from the post:

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You can use PyInstaller to package Python programs as standalone executables. It works on Windows, Linux, and Mac.

PyInstaller Quickstart\\
Install PyInstaller from PyPI:

pip install pyinstaller\\
Go to your program’s directory and run:

pyinstaller yourprogram.py\\
This will generate the bundle in a subdirectory called dist.

pyinstaller -F yourprogram.py\\
Adding -F (or --onefile) parameter will pack everything into single "exe".

pyinstaller -F --paths=<your_path>\Lib\site-packages  yourprogram.py\\
running into "ImportError" you might consider side-packages.

 pip install pynput==1.6.8\\
still runing in Import-Erorr - try to downgrade pyinstaller - see Getting error when using pynput with pyinstaller

For a more detailed walkthrough, see the manual.