My .pythonrc file

pythonrc

import rlcompleter
import atexit
import os
import readline
import sys
from pydoc import help

# Make TAB complete stuff
readline.parse_and_bind("tab: complete")

# Save our interpreter history between sessions
historyPath = os.path.expanduser("~/.pyhistory")

def save_history(historyPath=historyPath):
    import readline
    readline.write_history_file(historyPath)

if os.path.exists(historyPath):
   readline.read_history_file(historyPath)

atexit.register(save_history)

# clean up
del os, atexit, readline, rlcompleter, save_history, historyPath

>>> help(''.join)
Help on built-in function join:

join(...)
    S.join(iterable) -> string

    Return a string which is the concatenation of the strings in the
    iterable.  The separator between elements is S.

>>>