pyd files that contain native, platform-specific code, typically written in C. py files containing Python source code – they are. The answer is that they include extension modules, sometimes called native modules. But how can these packages do things that aren’t possible in regular Python?
Like image processing with Pillow, high-performance machine learning with scikit-learn, or micro-threading with greenlet. One of the benefits of installing a separate package is the ability to do something that you couldn’t normally do – in many cases, this is something that would be completely impossible otherwise. To explain why we need this tool, we need to look at a common pattern in Python packages. What is vcvarsall.bat, and why do I need it? What is this mythical batch file? Why do I need it? Where can I get it? How do I help Python find it? When will we be freed from this pain? Let’s look at some answers to these questions. One of the most common errors you’ll see is this one:Īs far as errors go, “unable to find vcvarsall.bat” is not the most helpful. Python’s packaging ecosystem is one of its biggest strengths, but Windows users are often frustrated by packages that do not install properly.
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