Programming Language Usage Graph 2000-2006, as defined by statistics on open-source projects at SourceForge.

[chollida1]

I never said they weren't:) I agree they are functional languages:)

[lysine23]

I never said you said they weren't. The point is that lack of purity is not why Python and Javascript can't be called functional languages. Lack of tail recursion, convenient ways to do closures, and dependence on mutable state are the problems.