Python Dotenv (DEPRECATED `dotenv` package)

Warnings

• breaking The `dotenv` package (pedroburon/dotenv, version 0.9.9) is DEPRECATED and has not been maintained since 2017. It should not be used in new projects and existing projects should migrate.
  Fix: Migrate to `python-dotenv` (theskumar/python-dotenv). Uninstall `dotenv` (`pip uninstall dotenv`) and then install `python-dotenv` (`pip install python-dotenv`).
• gotcha Most users intending to load environment variables from `.env` files are actually looking for the `python-dotenv` package, not `dotenv`. The `pip install dotenv` command installs the deprecated version.
  Fix: Always use `pip install python-dotenv` to ensure you get the actively maintained and feature-rich library.
• gotcha Despite sharing similar API calls like `load_dotenv()`, the deprecated `dotenv` package lacks critical features (e.g., handling variable expansion), bug fixes, and security updates present in `python-dotenv`.
  Fix: Refer to the `python-dotenv` documentation for the complete feature set and proper usage. Do not rely on `dotenv` for robust `.env` parsing.
• breaking Security vulnerabilities and unpatched bugs may exist in the unmaintained `dotenv` package, making its use risky, especially in production environments.
  Fix: Immediately switch to `python-dotenv` to benefit from ongoing maintenance, security patches, and active community support.

Install

• pip install dotenv Installing the DEPRECATED dotenv

Imports

• load_dotenv

  from dotenv import load_dotenv

  While this import path works for the deprecated 'dotenv' package, most users intending to load .env files should install and use the 'python-dotenv' package, which shares the same primary import structure but provides superior functionality and maintenance.

Quickstart

This quickstart demonstrates the recommended way to load environment variables using the `python-dotenv` library. It explicitly advises against installing the deprecated `dotenv` package and provides a functional example for `python-dotenv`.

# It is strongly recommended to use 'python-dotenv' instead of 'dotenv'.
# First, uninstall the deprecated package if you have it:
# pip uninstall dotenv

# Then, install the recommended 'python-dotenv' package:
# pip install python-dotenv

# Example using 'python-dotenv':
from dotenv import load_dotenv
import os

# Create a dummy .env file for demonstration
with open('.env', 'w') as f:
    f.write('MY_VAR="Hello from python-dotenv!"\n')
    f.write('ANOTHER_VAR=123\n')

# Load environment variables from .env
load_dotenv()

# Access the variables
my_var = os.getenv('MY_VAR')
another_var = os.getenv('ANOTHER_VAR')

print(f"MY_VAR: {my_var}")
print(f"ANOTHER_VAR: {another_var}")

# Clean up the dummy .env file
os.remove('.env')