In September 2018, there were seven million Python developers and 7.1 million Java developers. But UK developer-focused analyst SlashData has now put a figure on the actual number of developers that use the language.Īccording to SlashData in 2019, there are now 8.2 million developers in the world who code using Python and that population is now larger than those who build in Java, which numbers 7.6 million. Python’s rise among developers around the world has been documented by several well-known programming-language indexes.