Pure Python (no prerequistes beyond Python itself) 3-D geographic coordinate conversions and geodesy. API similar to popular $1000 Matlab Mapping Toolbox. PyMap3D is intended for non-interactive use on massively parallel (HPC) and embedded systems. Includes some relevant Vallado algorithms. PyMap3D provides conversion routines for the following coordinate systems: * geodetic * geocentric * AER: Azimuth, Elevation, Range * ECEF: Earth-centered, Earth-fixed * ECI: Earth-centered Inertial * ENU: East North Up * NED: North East Down * radec: right ascension, declination