Several committers have used JetBrains' PyCharm IDE in the past, and I am the person who initially requested a license for Python committers. The last license we had expired a while ago, and a couple of people asked me about renewals. So I applied to JetBrains for a renewed license.
They have now very kindly responded with licenses for Python committers - not just for PyCharm but for a number of their other development tools as well - including IntelliJ IDEA, AppCode, CLion, PyCharm and others. The terms of the license (which is valid for a year, but should be renewable) restricts usage to development of non-commercial, open source software.
JetBrains' new licensing model means that (IIUC) each user needs to have a JetBrains account. Once you have set one up, let me know if you're interested in using the tools and I'll email you a link you can visit to get your license. Please note that we have a limited pool of licenses, and each click of the link will, I understand, take one license from the pool. Please don't share this link with anyone else, and if another committer asks you about it, please refer them to me (so that I can keep track of who has what).