pythonrc

# ~/.pythonrc

import atexit, os

historyPath = os.path.join(os.path.expanduser("~"), ".pyhistory")

try:
    import readline, rlcompleter

    # default history len is -1 (infinite), which may grow unruly
    readline.set_history_length(1000)
    readline.parse_and_bind("tab: complete")

    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)
    readline.parse_and_bind("tab: complete")
    print "Tab completion enabled."

    del readline, rlcompleter

except IOError:
    pass

del atexit, os, historyPath, save_history