how to add path to python code example

Example 1: add python to path

To add Python to the Windows Path, follow these steps:

1. Start the Run box and enter sysdm.cpl
2. In the System Properties window go to the Advanced tab and 
   click the Environment Variables button
3. In the System variable window, find the Path variable and 
   click Edit
4. Position your cursor at the end of the Variable value line 
   and add the path to the python.exe file, preceeded with 
   the semicolon character (;)

Example 2: edit path variable using python

app_path = os.path.join(root_path, 'other', 'dir', 'to', 'app')
os.environ["PATH"] += os.pathsep + app_path

Example 3: add python to path windows 10

Either manually change it by doing the steps for the answer by skilliboi.

Or you can reinstall python and when you do that, make sure to tick the box that says:
Add python to PATH (or something like that)