pyvbaharness is a Python package that provides a stable harness for executing and validating VBA code within desktop Excel instances. It integrates with pytest for automated testing of macros and COM-based interactions. Designed to prevent common hanging issues when bridging Python and Excel VBA, it is useful for automation, testing, and validation workflows on Windows.
In the Testing & QA space, pyvbaharness takes a focused approach. Reliably running and testing VBA macros in Excel from Python without hangs or instability. It is built as an open-source project for python developers automating Excel. pyvbaharness is open source under the MIT license. It runs on the command line.
It is developed by William Smith Edward, and the product first shipped in 2026. Development happens publicly on GitHub with 12 commits in the last 90 days. Key capabilities include VBA Execution, Excel Automation, and COM Integration.
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