I built a command-line password manager in Python from scratch. It generates a unique encryption key, stores it locally, and uses Fernet symmetric encryption to lock every password before saving it to a file. When you want to view your passwords, it decrypts them on the fly using the same key. No plain text stored anywhere, just encrypted data that's completely unreadable without the key. What made this interesting for me although technical wasn't just the code , it was understanding the full data flow. How a string becomes bytes, gets encrypted, gets saved, then reverses the entire journey on the way back out. #python #AiProductEngineering

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