Internet
imaplib — IMAP4 protocol client
Source code: Lib/imaplib.py
nntplib — NNTP protocol client
Source code: Lib/nntplib.py
smtplib — SMTP protocol client
Source code: Lib/smtplib.py
smtpd — SMTP Server
Source code: Lib/smtpd.py
telnetlib — Telnet client
Source code: Lib/telnetlib.py
uuid — UUID objects according to RFC 4122
Source code: Lib/uuid.py
socketserver — A framework for network servers
Source code: Lib/socketserver.py
http.server — HTTP servers
Source code: Lib/http/server.py
http.cookies — HTTP state management
Source code: Lib/http/cookies.py
http.cookiejar — Cookie handling for HTTP clients
Source code: Lib/http/cookiejar.py
xmlrpc — XMLRPC server and client modules
XML-RPC is a Remote Procedure Call method that uses XML passed via HTTP as a transport. With it, a client can call methods with parameters on a remote server (the server is named by a URI) and get back structured data.
xmlrpc.client — XML-RPC client access
Source code: Lib/xmlrpc/client.py
xmlrpc.server — Basic XML-RPC servers
Source code: Lib/xmlrpc/server.py
ipaddress — IPv4/IPv6 manipulation library
Source code: Lib/ipaddress.py
poplib — POP3 protocol client
Source code: Lib/poplib.py
ftplib — FTP protocol client
Source code: Lib/ftplib.py
cgitb — Traceback manager for CGI scripts
Source code: Lib/cgitb.py
http — HTTP modules
Source code: Lib/http/__init__.py
urllib.robotparser — Parser for robots.txt
Source code: Lib/urllib/robotparser.py
urllib.error — Exception classes raised by urllib.request
Source code: Lib/urllib/error.py
urllib.parse — Parse URLs into components
Source code: Lib/urllib/parse.py
urllib.request — Extensible library for opening URLs
Source code: Lib/urllib/request.py
urllib — URL handling modules
Source code: Lib/urllib/
wsgiref — WSGI Utilities and Reference Implementation
The Web Server Gateway Interface (WSGI) is a standard interface between web server software and web applications written in Python. Having a standard interface makes it easy to use an application that supports WSGI with a number of different web servers.
cgi — Common Gateway Interface support
Source code: Lib/cgi.py
webbrowser — Convenient Web-browser controller
Source code: Lib/webbrowser.py
http.client — HTTP protocol client
Source code: Lib/http/client.py