\[One \,general \,law, \,leading \,to \,the \,advancement \,of \,all \,organic \,beings, namely,\] \[multiply, \,vary, \,let \,the \,strongest \,live \,and \,the \,weakest \,die.\] gplearn implements Genetic Programming in Python, with a scikit-learn inspired and compatible API. While Genetic Programming (GP) can be used to perform a very wide variety of tasks, gplearn is purposefully constrained