Raymond is the leader of an international Python training and consulting company and a celebrated speaker in the Python community worldwide. He has been a Python core developer for 16 years, contributing extensively to modules like bisect, collections, decimal, functools, itertools, math, random, with types like namedtuple, sets, dictionaries, etc. He is also known for his contributions to the Python Cookbook and for teaching Python via Twitter. He has also a recipient of Python Software Foundation's Distinguished Service Award.