(grouping)
| 120 | |
| 121 | # Iterate over grouping intervals |
| 122 | def _grouping_intervals(grouping): |
| 123 | last_interval = None |
| 124 | for interval in grouping: |
| 125 | # if grouping is -1, we are done |
| 126 | if interval == CHAR_MAX: |
| 127 | return |
| 128 | # 0: re-use last group ad infinitum |
| 129 | if interval == 0: |
| 130 | if last_interval is None: |
| 131 | raise ValueError("invalid grouping") |
| 132 | while True: |
| 133 | yield last_interval |
| 134 | yield interval |
| 135 | last_interval = interval |
| 136 | |
| 137 | #perform the grouping from right to left |
| 138 | def _group(s, monetary=False): |