CPyMad is a Cython binding to MAD-X.
MAD-X is a software package to simulate particle accelerators and is used at CERN and all around the world. It has its own proprietary scripting language and is usually launched from the command line.
Feel free to report bugs, request features and ask questions on the issue pages.
There is also a binding via JMad called JPyMAD. This has less features but does not require a C compiler for installing.