one-liners.py

# Python Help
python -h

# Calendar
python -m calendar
python -m calendar -h
python -m calendar 1999

# Zip and Gzip Tools
python -m zipfile -l pcblib.zip
python -m zipfile -e pcblib.zip
python -m zipfile -c release.zip *.py
python -m gzip -d mydata.tar.gz

# Pretty JSON Printer
python -m json.tool < mydata.json

# Unicode Characters
python -c "import unicodedata; print unicodedata.name(unichr(0x2249))"
python -c "print unichr(0x2249)"

# Web Servers
python -m SimpleHTTPServer
python -m CGIHTTPServer
python -m smtpd -n -c DebuggingServer localhost:8025

# Python Doc
python -m pydoc 
python -m pydoc -k 

# Python Debugger
python -m pdb 

# Interactive profile statistics browser
python -m pstats

# String processing
python -c "import sys; print ''.join(x.capitalize() for x in sys.stdin)"  < names.txt

# Numerical processing
python -c "import sys, math; print math.fsum(float(x) for x in sys.stdin)" < numbers.dat

# What is the easiest way to get a URL encoded password?
python -c 'from getpass import getpass; from urllib import quote; print quote(getpass("Proxy Password: "))'

# The Zen of Python
python -m this
python -c "import this"

# xkcd 353
python -c "import antigravity"

# Braces instead of whitespace
python -c "from __future__ import braces"

# A CS lecture
python -c "import heapq; print heapq.__about__"