If you don't have a second computer handy to test your source installer on, you can use a Python virtual environment instead. A virtual environment is an isolated Python installation that can be activated on-demand to keep packages from polluting our system's Python environment.
First, make sure you have virtualenv installed using pip:
pip install --user virtualenv
Next, create a directory anywhere on your system and create a Python 3 environment in it as follows:
mkdir testenv python3 -m virtualenv -p python3 testenv
This will create a copy of the Python interpreter and standard library in the testenv directory. This environment can be modified in any way you wish without affecting your system's Python.
