Python is a high-level programming language first released by Guido van Rossum in 1991. Python is designed around a philosophy which emphasizes readability and the importance of computer effort over programmer effort. Python core syntax and semantics are considered minimalist, while the standard library is considered large and comprehensive. Community practices in python programming have led to the recognition of a Python philosophy. Python is a multi-paradigm programming language (functional, object oriented and imperative) which has a fully dynamic type system and uses automatic memory management; it is thus similar to Perl, Ruby, Scheme, and Tcl.
The language has an open, community-based development model managed by the non-profit Python Software Foundation. While various parts of the language have formal specifications and standards, the language as a whole is not formally specified. The de facto standard for the language is the CPython implementation.
Some of the largest projects that use Python are the Zope application server, the Mnet distributed file store, Youtube and the original BitTorrent client. Large organizations that make use of Python include Google and NASA. Python has also seen extensive use in the information security industry. Notably, in several of the tools offered by Immunity Security, in several of the tools offered by Core Security, in the Web application security scanner Wapiti, and in the fuzzer TAOF. Python is commonly used in exploit development. Python has been successfully embedded in a number of software products as a scripting language. It is commonly used in 3D animation packages, as in Maya, Softimage XSI and Blender. It is also used in Paint Shop Pro. ESRI is now promoting Python as the best choice for writing scripts in ArcGIS. It is also used in Civilization IV as the control language for modding and event interaction. Eve Online is also built using python. For many operating systems, Python is a standard component; it ships with most Linux distributions, with FreeBSD, NetBSD, and OpenBSD, and with Mac OS X. Gentoo Linux uses Python in its package management system, Portage, and the standard tool to access it, emerge. Pardus uses it for administration and during system boot.