Anthropic has committed $1.5 million to the Python Software Foundation (PSF) over the next two years, focusing primarily on enhancing security within the Python ecosystem. This funding aims to address vulnerabilities in CPython and the Python Package Index (PyPI), particularly against supply-chain attacks that threaten millions of users. Key initiatives include developing new tools for proactive review of packages uploaded to PyPI, moving beyond the current reactive-only review. The PSF plans to create a dataset of known malware to inform these tools, with the expectation that this work will benefit other open-source ecosystems as well. The PSF's efforts will be guided by Seth Larson, the Security Developer in Residence, and Mike Fiedler, the PyPI Safety and Security Engineer, both of whom are also funded by Alpha-Omega. Beyond security improvements, Anthropic's investment supports the PSF's broader mission, which includes the Developer in Residence program that aids contributions to CPython and community initiatives, as well as maintaining core infrastructure like PyPI. This partnership underscores the importance of collaboration between corporate entities and non-profits in bolstering open-source software security and community support.