Python is verdeeld in standaard modules:
String processing
Operating system interfaces
Networking
Threads
GUI
Database
Language services
Security.

Er zijn ook vele bibliotheken van derden
XML
Numeric Processing
Plotting/Graphics
ezv.

Alle bibliotheken zijn toegankelijk met “import”
import string
…
a = string.split(x)

Popular Python Tools and Extensions

Domain - Extensions
Systems programming - Sockets, threads, signals, pipes, RPC calls, POSIX bindings
Graphical user interfaces - Tk, PMW, MFC, X11, wxPython, KDE, Gnome
Database interfaces - Oracle, Sybase, PostGres, mSQL, persistence, dbm, _mysql
Microsoft Windows tools - MFC, COM, ActiveX, ASP, ODBC, .NET
Internet tools - JPython, CGI tools, HTML/XML parsers, email tools, Zope
Distributed objects - DCOM, CORBA, ILU, Fnorb
Other popular tools - SWIG, PIL, regular expressions, NumPy, cryptography