When we talk about different languages integrated with Python, we think almost exclusively about C and C++. Even tools such as Cython or Pyrex, which define Python language supersets only for the purpose of creating Python extensions, are in fact source-to-source compilers that generate the C code from extended Python-like syntax.
In fact, you can use Python dynamic/shared libraries written in any language if the language supports compilation in the form of dynamic/shared libraries. So, interlanguage integration possibilities go way beyond C and C++. It's because libraries are intrinsically generic. They can be used in any language that supports their loading. So, even if you write such a library in a completely different language (let's say Delphi or Prolog), you can use it in Python. Still, it is hard to name such a library...
