wtfpython is a collection of Python code snippets and explanations that documents surprising, counterintuitive, and often confusing behaviors in the Python language.
The project addresses the problem of understanding why Python sometimes behaves in unexpected ways. It works by presenting short, self-contained code examples that demonstrate quirky language behaviors, followed by detailed explanations of the underlying mechanisms that cause them. Each snippet is designed to be surprising at first glance, then educational once the explanation is read. The examples cover a range of phenomena including mutable default arguments, object identity versus equality, scope and closure issues, and other edge cases that arise from Python's design choices.
The tool suits developers preparing for Python interviews, those seeking to deepen their understanding of the language's internals, and anyone who has encountered confusing behavior and wants to understand why it happens. It is particularly valuable for intermediate Python developers who have moved beyond basic syntax but have not yet internalized all of the language's subtleties. The project does not position itself against alternatives; it functions as a reference and learning resource rather than a tool that competes with other software.
The project maintains an active repository with ongoing additions to its collection of examples. Contributions are accepted and integrated, indicating sustained community engagement with the material. The codebase continues to receive updates that expand the range of documented behaviors and refine existing explanations.
