Tutorials on Environment Variables Python

Learn about Environment Variables Python from fellow newline community members!

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Build a Python RAG App: Load API Keys with `load_dotenv`

Secure key handling stopped being optional the moment you wired an OpenAI or Pinecone key into your code. Never hard-code secrets. Build a clean virtual environment, pin your dependencies in a requirements.txt, and let load_dotenv read your keys from a .env file at runtime. Start with isolation. A…
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Image of Author Dr. Dipen
Dr. Dipen
I am an AI/ML researcher with 150+ citations and 16 published research papers. I have three tier-1 publications, including Internet of Things (Elsevier), Biomedical Signal Processing and Control (Elsevier), and IEEE Access. In my research journey, I have collaborated with NASA Glenn Research Center, Cleveland Clinic, and the U.S. Department of Energy for various research projects. I am also an official reviewer and have reviewed over 100 research papers for Elsevier, IEEE Transactions, ICRA, MDPI, and other top journals and conferences. I hold a PhD from Cleveland State University with a focus on large language models (LLMs) in cybersecurity, and I also earned a master’s degree in informatics from Northeastern University.
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python-dotenv with LiteLLM for Multi-Model AI Apps

If you're running multi-model AI in production, you've hit this problem: dozens of provider keys scattered across your codebase, rotation means grep-and-pray, and swapping models requires a pull request. Python-dotenv with LiteLLM fixes this by treating credentials as infrastructure config, not…
Thumbnail Image of Tutorial python-dotenv with LiteLLM for Multi-Model AI Apps
Image of Author Dr. Dipen
Dr. Dipen
I am an AI/ML researcher with 150+ citations and 16 published research papers. I have three tier-1 publications, including Internet of Things (Elsevier), Biomedical Signal Processing and Control (Elsevier), and IEEE Access. In my research journey, I have collaborated with NASA Glenn Research Center, Cleveland Clinic, and the U.S. Department of Energy for various research projects. I am also an official reviewer and have reviewed over 100 research papers for Elsevier, IEEE Transactions, ICRA, MDPI, and other top journals and conferences. I hold a PhD from Cleveland State University with a focus on large language models (LLMs) in cybersecurity, and I also earned a master’s degree in informatics from Northeastern University.
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