(self)
| 69 | } |
| 70 | |
| 71 | def refresh(self): |
| 72 | for i in range(self.num_buffers): |
| 73 | if self.buffers[i] is None and i not in self.empty: |
| 74 | self.buffers[i] = self.files[i].readline() |
| 75 | |
| 76 | if self.buffers[i] == "": |
| 77 | self.empty.add(i) |
| 78 | self.files[i].close() |
| 79 | |
| 80 | return len(self.empty) != self.num_buffers |
| 81 | |
| 82 | def unshift(self, index): |
| 83 | value = self.buffers[index] |