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Cloudflare extends Python Workers to Windows with Pywrangler support
Cloudflare Workers · featuresdkplatform · developers.cloudflare.com ↗

Windows Support for Python Workers

Cloudflare has extended Pywrangler, the CLI tool for Python Workers, to support Windows development environments. Previously limited to macOS and Linux, Python Workers can now be developed and deployed directly from Windows.

Getting Started

To develop and deploy Python Workers on Windows, use Pywrangler via uvx:

uvx --from workers-py pywrangler dev
uvx --from workers-py pywrangler deploy

Specify your Worker's Python dependencies in pyproject.toml as usual—no additional Windows-specific configuration is needed.

Requirements

To use this feature, ensure you have the minimum required versions:

  • wrangler >= 4.64.0
  • workers-py >= 1.72.0
  • uv >= 0.29.8

Upgrade your tools with:

  • uv tool upgrade workers-py (includes Pywrangler)
  • npm install -g wrangler@latest
  • uv self update (for uv)

What's Included

All Pywrangler functionality works on Windows, including package management, local development, and deployment. This brings feature parity across all supported operating systems.