.pythonrc.py

def comp():
    import readline
    import sys
    try:
        # python >= 3.something
        del sys.__interactivehook__
    except AttributeError:
        pass

    try:
        from jedi.utils import setup_readline
        setup_readline()
    except ImportError:
        print("Jedi is not installed, falling back to readline")
        try:
            import rlcompleter
            assert rlcompleter
            readline.parse_and_bind("tab: complete")
        except ImportError:
            print("Readline is not installed. No tab completion is enabled.")


def history():
    import os
    import sys
    import readline

    # ancient pythons dont support history files?
    if not hasattr(readline, 'write_history_file'):
        return

    def hpath():
        try:
            # python >= 2.3
            import platform
            impl = platform.python_implementation()
        except ImportError:
            # python < 2.3
            impl = 'CPython'

        try:
            # python >= 2.0
            major, minor = sys.version_info[:2]
        except AttributeError:
            # python < 2.0 ... no split on str objects, fun.
            import string
            major, minor = string.split(sys.version, '.')[:2]

        hname = '~/.pyhistory-%s%s.%s' % (impl, major, minor)
        return os.path.expanduser(hname)

    historyPath = hpath()

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

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

    try:
        # python >= 2.0
        import atexit
        atexit.register(save_history)
    except ImportError:
        # should probably play nice here...
        sys.exitfunc = save_history

if __name__ == '__main__':
    comp()
    history()
    del comp, history