Master Bazel for Python Projects | Full Tutorial

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Learn how to streamline Python project builds with Bazel in this comprehensive tutorial. I introduce Bazel as a powerful tool for managing dependencies and creating standalone tools that include a specific Python version—no external installations required!

What You’ll Learn:
🔹 Set Up a Bazel Workspace
Discover how to create a minimal Bazel workspace, including the essential build files, laying the groundwork for Python support and dependency management.

🔹 Integrate Python Rules
Learn to add external Python rules using Bazel's HTTP archive feature. I'll show you how to download and configure the necessary tools for Python development.

🔹 Register a Python Toolchain
Find out how to declare specific Python versions for your project by registering a Python toolchain, ensuring your builds use the correct interpreter.

🔹 Install Python Packages via PIP

🔹 Build and Run Your Project
Watch as I demonstrate running the Bazel build command to create a functional executable. I’ll test the script to show how it effectively uses external libraries without requiring user-installed dependencies.

This tutorial is perfect for developers looking to simplify Python builds while leveraging Bazel's robust features.

📌 Keywords: Bazel Python tutorial, Bazel workspace setup, Python toolchain, external dependencies, Bazel build for Python, standalone Python tool, PIP integration, Python development tips.

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Thank you !! That was super useful and saved me a tons of time trying to figure out how to make Bazel and PIP work.

PhilippeSelo
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can you create a tutorial how to use custom provider() to share some more complicated info between rules? covering how bazel manages paths inside of the build folder?

antontsue
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Can your share your repo? I think I did this in the exact same way, but it don't work for me. Or maybe something is deprecated.

christophrohde
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In the current version of python rules this fails:
ERROR: Analysis of target '//:main' failed; build aborted: Analysis failed

glorialam
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Hi can you pls show how to add flask as external dependency

JignashaDalal
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