My Pythonrc.

.pythonrc

from __future__ import print_function
import os
import sys

# version check
version = 'pypy' if 'PyPy' in sys.version else 'py2' if sys.version_info[0] == 2 else 'py3'

django = ipython = False

# ipython check
if version != 'pypy':
    try:
        import IPython
        if sys.stdout is not sys.__stdout__:
            print('IPython not usable in non-standard Python shell.')
        else:
            ipython = True
    except ImportError:
        pass

# django check
# if os.path.isfile('settings.py') and os.path.isfile('manage.py'):
#     django = True

def django_setup():
    import traceback
    django_ns = {}
    try:
        # import models
        project_dir = os.getcwd()
        sys.path.insert(0, os.path.dirname(project_dir))
        os.environ["DJANGO_SETTINGS_MODULE"] = '.'.join([os.path.split(project_dir)[-1], 'settings'])
        from django.db.models.loading import get_models
        for m in get_models():
            try:
                django_ns[m.__name__] = getattr(__import__(m.__module__, fromlist=[m.__name__]), m.__name__)
            except ImportError:
                raise
        django_ns['models_list'] = django_ns.copy()

        # set logging level
        import logging
        l = logging.getLogger('django.db.backends')
        l.setLevel(logging.DEBUG)
        l.addHandler(logging.StreamHandler())
    except:
        e_type, e_value, tb = sys.exc_info()
        e_type = str(e_type).split("'")[1].split('.')[1]
        print()
        print("{0}: {1}".format(e_type, e_value))
        print(traceback.format_list(traceback.extract_tb(tb))[-1].strip())
    return django_ns

if ipython:
    user_ns = {
        'os': os,
        'sys': sys,
    }
    if django:
        user_ns.update(django_setup())
    if IPython.__version__ < '0.11':
        shell = IPython.Shell.IPShell(user_ns=user_ns)
        sys.exit(shell.mainloop())
    if IPython.__version__ < '1.0':
        from IPython.frontend.terminal.ipapp import TerminalIPythonApp
        app = TerminalIPythonApp.instance()
        app.initialize()
        app.shell.user_ns.update(user_ns)
        sys.exit(app.start())
    if IPython.__version__ > '1.0':
        del os.environ['PYTHONSTARTUP']
        from IPython import start_ipython
        sys.exit(start_ipython())
else:
    if django:
        django_setup()
    try:
        import readline
    except ImportError:
        print("Module readline not available.")
    else:
        readline.parse_and_bind("tab: complete")
        histfile = os.path.join(os.environ["HOME"], ".python_history")
        try:
            try:
                readline.read_history_file(histfile)
            except IOError:
                pass
            import atexit
            atexit.register(readline.write_history_file, histfile)
            del atexit
        except AttributeError:
            pass
        del histfile
        del readline

# vim: ft=python