For other people that found there way here looking to use Python in Godot, the https://github.com/touilleMan/godot-python project (PythonScript in the AssetLib) is active and completely usable, though it is still in beta.
I just installed it today and was able to use Python packages for USB serial communication in my Godot project. From the older posts here, it sounds like this used to be much harder than it is now. My experience with PythonScript so far is extremely positive.
Here is a quick start aimed at people familiar with Python but still new to Godot (e.g., me):
create a Godot project
- ex: create a project named "Talk-to-Python"
click AssetLib
- search for
PythonScript
- download (will take a while and appears to hang, just be patient)
click Install
- optionally, uncheck the folders for operating systems that
are not the operating system you're installing this on
save and restart:
create a node
save the scene
quit to Project Page
re-open this project
Attach a script to the Main node. In the dialog, Python is now a language option! Pick Python and let it generate the default script.
Install packages with pip from the command line as usual. Just a little setup:
cd into the folder for your OS, e.g. on Windows 64bit cd into the windows-64 folderpython.exe runs the Windows installation of Python, but I want the python.exe in this folder, so prefix with ./:
mike@HOME ~/godot-games/talk-to-python/addons/pythonscript/windows-64
$ ./python.exe -V
Python 3.8.5
The Python installed by PythonScript only has one package, godot. So first install pip as follows:
$ ./python.exe -m ensurepip
Looking in links: c:\cygwin64\tmp\tmprt3m6lj0
Requirement already satisfied: setuptools in c:\users\mike\appdata\roaming\python\py
thon38\site-packages (47.3.1)
Processing c:\cygwin64\tmp\tmprt3m6lj0\pip-20.1.1-py2.py3-none-any.whl
Installing collected packages: pip
Successfully installed pip-20.1.1
And update pip:
$ ./python.exe -m pip install -U pip
Now install whatever is needed:
$ ./python.exe -m pip install pyserial