PyCharm is a nice and powerful IDE for Python development, made by JetBrains.
JetBrains is so kind to offer a free license for developers / contributors of OpenSource projects (like MoinMoin Wiki), for working on the project.
So, if you are a developer of / contributor to MoinMoin and interested in enhancing your productivity using PyCharm, ask ThomasWaldmann for the license key.
Please check the the license agreement before asking for the key.
See also: PyCharm Requirements and Download