Richie et al imp of Manin2008.py contains a Python reimplementation of the models of word meaning evolution in Manin (2008, Cognitive Science).
manin2008_gen_model_explo.py uses multicoreprocessing to run multiple simulations of different parameter values.
manin2008_zipf_cover_plotting.py uses multicoreprocessing to plot multiple runs simultaneously.
Manin, D. Y. (2008). Zipf's law and avoidance of excessive synonymy. Cognitive Science, 32(7), 1075-1098.