use dotenv variables in python code example

Example 1: dotenv python

# Install dotenv via:
pip3 install python-dotenv

# Load .env file using:
from dotenv import load_dotenv
load_dotenv()

# Use the variable with:
import os
os.getenv("ACCESS_KEY")

Example 2: use python dotenv

pip install -U python-dotenv

#### And in your script
from dotenv import load_dotenv, find_dotenv
load_dotenv(find_dotenv())