  We obtain static multi-polytropic wormhole solutions in the framework of GR
gravity. The resulting metric is asymptotically Minkowskian, and locally that
of a wormhole. We also examine gravitational lensing by the wormhole, and
calculate the deflection angle for weak and strong field limits. We investigate
microlensing in the weak field limit and obtain corresponding light curves for
both galactic and extragalactic situations. We discuss the multi-polytropic
equation of state for the energy-momentum tensor which supports this geometry
and finally, we check for the satisfaction of the weak energy condition.
