Python Network Programming: Modules and Protocols for Effective Networking
Explore Python's capabilities for network programming with the threading module for managing multiple threads and the use of Unix and Internet domain sockets for inter-process communication. Learn about built-in modules for socket programming and application-level network protocols, including key protocols, common functions, and their associated port numbers.
Python - Network Programming
The threading module in Python's standard library allows handling multiple threads and their interaction within a single process. Communication between processes on the same machine is managed using Unix domain sockets, while processes on different machines use Internet domain sockets connected via TCP (Transmission Control Protocol).
Python Standard Library Modules for Network Programming
Python provides built-in modules for both low-level socket programming and high-level access to specific application-level network protocols:
Protocol | Common Function | Port No | Python Module |
---|---|---|---|
HTTP | Web pages | 80 | httplib, urllib, xmlrpclib |
NNTP | Usenet news | 119 | nntplib |
FTP | File transfers | 20 | ftplib, urllib |
SMTP | Sending email | 25 | smtplib |
POP3 | Fetching email | 110 | poplib |
IMAP4 | Fetching email | 143 | imaplib |
Telnet | Command lines | 23 | telnetlib |
Gopher | Document transfers | 70 | gopherlib, urllib |
These modules allow Python programmers to implement client and server applications for various network protocols, enabling tasks such as web scraping, email handling, and remote server interaction.