environment/lib/python2.7/site-packages/IPython/utils/pickleshare.py
def hset(self, hashroot, key, value):
        """ hashed set """
        hroot = self.root / hashroot
        if not hroot.isdir():
            hroot.makedirs()
        hfile = hroot / gethashfile(key)
        d = self.get(hfile, {})
        d.update( {key : value})
        self[hfile] = d
def hset(self, hashroot, key, value):
        """ hashed set """
        hroot = self.root / hashroot
        if not hroot.isdir():
            hroot.makedirs()
        hfile = hroot / gethashfile(key)
        d = self.get(hfile, {})
        d.update( {key : value})
        self[hfile] = d
hashed set