pyOpenSci promotes open and reproducible research through peer-review of scientific Python packages. We also build technical capacity by providing a curated repository of high-quality packages and enabling scientists to write and share their own software. We hope to foster a greater sense of community among scientific Python users so that we can help each other become better programmers and researchers. See our list of Python packages for an idea of the open-source projects that pyOpenSci has assisted. pyOpenSci is being modeled after the successful rOpenSci community.