PyArmor is a utility that obfuscates Python scripts, bind obfuscated scripts to fixed machine or expire obfuscated scripts. It protects Python scripts by the following ways:

1. Obfuscate code object to protect constants and literal strings.
2. Insert random opcode to protect the action of each function.
3. Clear f_locals of frame as soon as code object completed execution.
4. Verify the license file at runtime, which bind to fixed machine or expires at the specified time.

It can run on Windows, Linux, and MacOS. It supports Python 2.6, 2.7 and 3.4 to 3.10 as of my last update in September 2021.

You can use it to package your Python application into an executable or a library, which can be run or used directly on the target machine without deploying Python environment.

Here is a simple usage example:

1. First, install PyArmor with pip:

   bashCopy code

   pip install pyarmor


2. Then you can obfuscate your script (for example, myscript.py) by using the following command:

   bashCopy code

   pyarmor obfuscate myscript.py


Please note that as with all obfuscation techniques, this will not provide perfect security. Determined attackers can still potentially reverse-engineer the application, but it will increase the effort needed to do so. Always complement this with legal protections, like appropriate licensing and terms of service.