pythonrc.py

def init():
    # This wrapper avoids global scope contamination
    import os, sys, atexit, readline, rlcompleter, pprint, glob

    # Enable auto-complete:
    readline.parse_and_bind("tab: complete")

    # Save command history:
    history_path = os.path.expanduser("~/.pyhistory")

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

    atexit.register(lambda: readline.write_history_file(history_path))

    # Pretty-print by default:
    def display_hook(x):
        if x is None: return
        pprint.pprint(x)
        __builtins__._ = x # shell: _ is the result of the last command

    sys.displayhook = display_hook

    # Warn on deactivated virtualenv:
    if glob.glob('*/bin/activate'):
        print '\033[1;33m' 'warning: deactivated virtual env detected' '\033[00m'

init()
del init