environment/lib/python2.7/site-packages/IPython/core/prefilter.py
def unregister_handler(self, name, handler, esc_strings):
        """Unregister a handler instance by name with esc_strings."""
        try:
            del self._handlers[name]
        except KeyError:
            pass
        for esc_str in esc_strings:
            h = self._esc_handlers.get(esc_str)
            if h is handler:
                del self._esc_handlers[esc_str]
def unregister_handler(self, name, handler, esc_strings):
        """Unregister a handler instance by name with esc_strings."""
        try:
            del self._handlers[name]
        except KeyError:
            pass
        for esc_str in esc_strings:
            h = self._esc_handlers.get(esc_str)
            if h is handler:
                del self._esc_handlers[esc_str]
Unregister a handler instance by name with esc_strings.