def getPermanence(self, columnIndex, permanence):
assert(columnIndex < self._numColumns)<EOL>permanence[:] = self._permanences[columnIndex]<EOL>
Returns the permanence values for a given column. ``permanence`` size
must match the number of inputs.

:param columnIndex: (int) column index to get permanence for.
:param permanence: (list) will be overwritten with permanences.