add python to environment variables meaning code example

Example 1: python path to python executable

>>> import sys
>>> print(sys.executable)
C:\path\to\python.exe

Example 2: add python to path

# On linux
$ which python; # Get Path of the executable
$ export PATH=$PATH:{PATH_PYTHON}; # but it isn't continue
# ----------------------
$ which python; # Get Path of the executable
export PATH=$PATH:{PATH_PYTHON}; # add in your ~/.bashrc or your ~/.zshrc