Daniel Feldroy • 9/2/2025

TIL: Setting environment variables for pytest

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This article explains a better method for setting environment variables in pytest tests by using the pytest-env package. Instead of directly modifying os.environ, which can cause side effects, the guide shows how to define variables in the pyproject.toml file, ensuring tests run in a controlled environment. It includes installation commands for both pip and uv.

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#Python #testing #pytest
TIL: Setting environment variables for pytest

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