An aside, Python doesn't really fit in with the Ruby, PHP, and Javascript. Although Python was not created for the purposes of research (it was more of a server

An aside, Python doesn't really fit in with the Ruby, PHP, and Javascript. Although Python was not created for the purposes of research (it was more of a server glue), it was influenced by Guido's experience working on ABC; a research language designed for teaching children. So, python is much more of a result of research than the others. That being said, the ironic part is the relevant research was not type theory, but rather "How can we teach programming to children?"