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| from contextlib import contextmanager | |
| @contextmanager | |
| def save(obj, attrs=None): | |
| """Save attributes of an object, then restore them. | |
| Example: | |
| import breakfast | |
| with save(breakfast, ('eggs', 'bacon')): | |
| breakfast.Eggs = lambda: "Eggs" | |
| """ | |
| orig_attrs = {} | |
| for attr in attrs: | |
| orig_attrs[attr] = getattr(obj, attr) | |
| try: | |
| yield | |
| finally: | |
| for attr in attrs: | |
| try: | |
| setattr(obj, attr, orig_attrs[attr]) | |
| except: | |
| pass |
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