A few interesting Python snippets I came accross on programming.reddit.com:

python -m SimpleHTTPServer

Starts an HTTP server on port 8000 that will serve the files in the current directory. Very useful for quickly transferring a file from one computer to another when you don’t have a SSH or FTP server running.

python -m smtpd -n -c DebuggingServer localhost:1025

Will start an SMTP server on 1025 and print the emails it receives to stdout, great for testing.

import urllib
urllib.urlretrieve('http://localhost:8000/...')

Retrieves a file over HTTP

python -i myScript.py

If there’s an exception it allows you to work from the console.