A structure which implements a list of dict's.
| 2 | import types |
| 3 | |
| 4 | class Table(object): |
| 5 | """A structure which implements a list of dict's.""" |
| 6 | def __init__(self, *args): |
| 7 | self.columns = args |
| 8 | self.rows = [] |
| 9 | |
| 10 | def _createRow(self, k,v): |
| 11 | return dict(zip(k, v)) |
| 12 | |
| 13 | def append(self, row): |
| 14 | if type(row) == types.DictType: |
| 15 | row = [row[x] for x in self.columns] |
| 16 | row = tuple(row) |
| 17 | if len(row) != len(self.columns): |
| 18 | raise TypeError, 'Row must contain %d elements.' % len(self.columns) |
| 19 | self.rows.append(row) |
| 20 | |
| 21 | def __iter__(self): |
| 22 | for row in self.rows: |
| 23 | yield self._createRow(self.columns, row) |
| 24 | |
| 25 | def __getitem__(self, i): |
| 26 | return self._createRow(self.columns, self.rows[i]) |
| 27 | |
| 28 | def __setitem__(self, i, row): |
| 29 | if type(row) == types.DictType: |
| 30 | row = [row[x] for x in self.columns] |
| 31 | row = tuple(row) |
| 32 | if len(row) != len(self.columns): |
| 33 | raise TypeError, 'Row must contain %d elements.' % len(self.columns) |
| 34 | self.rows[i] = row |
| 35 | |
| 36 | def __repr__(self): |
| 37 | return ("<" + self.__class__.__name__ + " object at 0x" + str(id(self)) |
| 38 | + " " + str(self.columns) + ", %d rows.>" % len(self.rows)) |
| 39 | |
| 40 | |
| 41 |