Heatsim2 heatsim2 is a package for finite difference calculations of heat conduction. It is designed to let you define the grid and boundary conditions from Python, while implementing the calculations using optimized C code. It uses an alternating direction implicit (ADI) Crank- Nicholson solver. Requirements Python 2 or Python 3 Numpy Cython, configured with a C compiler Matplotlib (recommended; required for demos)DownloadDownload or clone the repository from https://github.com/isuthermography/heatsim2/Installation"python setup.py build" to compile"python setup.py install" to install into your site-packages directoryDocumentationSee doc/heatsim2_doc.xhtml in the source repository.Acknowledgment This material is based on work supported by NASA through Early Stage Innovation grant #NNX15AD75G.