python-dotenv

environment management

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python-dotenv is a Python library that reads key-value pairs from a .env file and can set them as environment variables. It helps in the development of applications following the 12-factor principles by managing configurations separately from the codebase.

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Usage Example

1. Install the package:

   pip install python-dotenv
   

2. Create a .env file:

   DATABASE_URL=postgres://user:password@localhost/dbname
   SECRET_KEY=your_secret_key
   DEBUG=True
   

3. Load environment variables in your Python script:

   import os
   from dotenv import load_dotenv
   
   load_dotenv()  # Load variables from .env file
   
   database_url = os.getenv('DATABASE_URL')
   secret_key = os.getenv('SECRET_KEY')
   debug_mode = os.getenv('DEBUG')
   
   print(f"Database URL: {database_url}")
   print(f"Secret Key: {secret_key}")
   print(f"Debug Mode: {debug_mode}")
   

   This script loads the environment variables from the .env file and prints their values.

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