def shift(self, i=1, key='Level'):
if not key in self._keys:
mwf_logger.warning("{0} not a valid key in {1}".format(
key, self._keys))
else:
ix = self._keys.index[key]
self.skip[ix] += i
def shift(self, i=1, key='Level'):
if not key in self._keys:
mwf_logger.warning("{0} not a valid key in {1}".format(key, self._keys))
else:
ix = self._keys.index[key]
self.skip[ix] += i