import sys

class Std(object):

    """ makes all standard python modules available as a lazily 

        computed attribute. 

    """ 

    def __init__(self):

        self.__dict__ = sys.modules

    def __getattr__(self, name):

        try:

            m = __import__(name)

        except ImportError:

            raise AttributeError("py.std: could not import %s" % name)

        return m

std = Std()