How to make python select work for python command

To make the python_select command work with the $python command, you'll need to clarify your requirements since $python doesn't correspond to a standard Python command. I'll assume you want to create a custom Python command, $python, that allows you to select between different Python versions installed on your system.
Here's a tutorial on how to achieve this using Python's built-in python_select module.
Note: This example is based on the assumption that you want to create a custom Python command with version selection. You can replace $python with any custom command you'd like.
You should have multiple Python versions installed on your system. You can check which Python versions are installed by running python --version or python3 --version.
Make sure you have Python's built-in python_select module. It should be available in Python 3.3 and later.
Create a custom Python script:
Create a Python script (e.g., custom_python.py) that will handle the Python version selection. This script will use the python_select module to execute the selected Python version.
Make the script executable:
You need to make the custom_python.py script executable using the chmod command in a Unix-like environment. Open your terminal and navigate to the directory where the script is located:
Create symbolic links for Python versions:
Next, you need to create symbolic links for each Python version you want to use with your custom command. For example, if you have Python 3.7 and Python 3.9 installed, you can create symbolic links like this:
Replace /usr/bin/python3.7 and /usr/bin/python3.9 with the actual paths to your Python installations.
Add the symbolic links to the python_select database:
Use the python_select command to add the symbolic links to the database. Run the following command for each symbolic link you created:
Use your custom Python command:
Now, you can use your custom Python command, $python, to select the desired Python version. For example:
This will make your custom Python script (custom_python.py) execute the selected Python version (in this case, Python 3.7).
To switch to another Python version, simply use the use command with the desired version.
That's it! You've created a custom Python command, $python, that allows you to select different Python versions installed on your system. Make sure to replace the paths and versions in the tutorial with the ones relevant to your setup.
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