Method __delitem__

pattern/db/__init__.py:1970–1971

(self, j)

            raise IndexError, "list index out of range"
        return self._cache.setdefault(j, DatasheetColumn(self._datasheet, j))
    def __delitem__(self, j):
        self.pop(j)
    def __len__(self):
        return len(self._datasheet) > 0 and len(self._datasheet[0]) or 0
    def __iter__(self):