completer setting for python interactive shell

.pythonrc.py

# add following line to .bashrc
#PYTHONSTARTUP=$HOME/.pythonrc.py
#export PYTHONSTARTUP
try:
    import readline
    import rlcompleter
    pass
except ImportError, error_string:
    print 'ImportError: %s' % error_string
    pass
else:
    readline.parse_and_bind('tab: complete')

    try:
        import os
        hist = os.path.join(os.environ['HOME'], '.pyhist')

        if os.access(hist, os.F_OK) :
            readline.read_history_file(hist)
            pass

        import atexit
        atexit.register(readline.write_history_file, hist)

        del os, atexit

        pass
    except ImportError, errro_string:
        print 'ImportError: %s' % error_string
        pass
    pass