| from contextlib import contextmanager | |
| from typing import Optional, Tuple, Iterator | |
| STRICT_OPTIONAL = False | |
| find_occurrences = None # type: Optional[Tuple[str, str]] | |
| @contextmanager | |
| def strict_optional_set(value: bool) -> Iterator[None]: | |
| global STRICT_OPTIONAL | |
| saved = STRICT_OPTIONAL | |
| STRICT_OPTIONAL = value | |
| yield | |
| STRICT_OPTIONAL = saved |