When you conquer and take over a city, shouldn't you benefit from any scientific knowledge the vanquished may have? This simple mod will give you one free tech from the list of techs the defeated Civ has, but you do not have. This mod allows you to gain scientific knowledge from the successful conquest of an enemy city.
Updated python code to insure the tech transfer occurs on conquest and not by trade. Minor oversight.
Tech By Conquest 2016-10-05
Tech By Conquest