(self, flags)
| 179 | |
| 180 | @contextmanager |
| 181 | def extra_flags(self, flags): |
| 182 | ## bits that we'll set to 1 |
| 183 | turn_on_bits = ~self.flags & flags |
| 184 | |
| 185 | |
| 186 | self.flags = self.flags | flags |
| 187 | try: |
| 188 | yield |
| 189 | finally: |
| 190 | # turn off only the bits we turned on so that something like |
| 191 | # __future__ that set flags stays. |
| 192 | self.flags &= ~turn_on_bits |