environment/lib/python2.7/site-packages/IPython/parallel/apps/launcher.py
def start(self, n):
        """Start n engines by profile or profile_dir."""
        self.n = n
        return super(MPIEngineSetLauncher, self).start(n)
def start(self, n):
        """Start n engines by profile or profile_dir."""
        self.n = n
        return super(MPIEngineSetLauncher, self).start(n)
Start n engines by profile or profile_dir.