Source: http://www.cnblogs.com/yd1227/archive/2010/11/15/1877467.html
Sorting is not prioritized.
1.os and OS Related
2.time is time-related
3.pcap Grab Bag
4.DPKT Unpacking and Packaging
5.pymssql operation of MSSQL database
6.cProfile self-debug script performance, can accurately and quickly calculate run time
7.urllib2 one of the first contact libraries, related to HTTP
8.httplib related to HTTP
9.smtplib of Lib for SMTP
Lib of 10.poplib POP3
11.tarfile Solution Tar Package
12.socket the most original TCP library
13.paramiko SSH SFTP
14.psyco enhanced performance, very efficient for functions and classes, especially with multiple loops
15.pywin32 using the Windows API
16.selenium Interface Automation
17.sqlite3 Sqlite3 Database Operations
Encoding and decoding of 18.EMAIL messages
19.stackless Micro-threading, according to the relevant person test, can achieve 10 times times the normal thread performance
20.WX Wxpython, write interface with
21.py2exe the PY program into EXE executable
22.shutil is useful, copy, delete
23.thread Normal Thread
Common Python libraries (constantly updated)