Python (programming language)
Paradigm(s) multi-paradigm : object-oriented , imperative , functional , procedural , reflective Appeared in 1991 Designed by Guido van Rossum Developer Python Software Foundation Stable release 3.2.3 / 11 April 2012 ; 2 months ago 2.7.3 / 11 April 2012 ; 2 months ago Preview release 3.3.0a3 / 1 May 2012 ; 42 days ago [ 1 ] Typing discipline duck , dynamic , strong Major implementations CPython , IronPython , Jython , Python for S60 , PyPy Dialects Cython , RPython , Stackless Python Influenced by ABC , [ 2 ] ALGOL 68 , [ 3 ] C , [ 4 ] C++ , [ 5 ] Dylan , [ 6 ] Haskell , [ 7 ] Icon , [ 8 ] Java , [ 9 ] Lisp , [ citation needed ] Modula-3 , [ 5 ] Perl Influenced Boo , Cobra , D , Falcon , Groovy , JavaScript , Ruby [ 10 ] OS Cross-platform License Python Software Foundation License Usual filename extensions .py, .pyw, .pyc, .pyo, .pyd Website python.org Python is a general-purpose , high-level programmin