  We introduce MulensModel, a software package for gravitational microlensing
modeling. The package provides a framework for calculating microlensing model
magnification curves and goodness-of-fit statistics for microlensing events
with single and binary lenses as well as a variety of higher-order effects:
extended sources with limb-darkening, annual microlensing parallax, satellite
microlensing parallax, and binary lens orbital motion. The software could also
be used for analysis of the planned microlensing survey by the NASA flag-ship
WFIRST satellite. MulensModel is available at
https://github.com/rpoleski/MulensModel/.
