(cls, /, **kwargs)
| 1882 | lockfile = None |
| 1883 | |
| 1884 | def __init_subclass__(cls, /, **kwargs): |
| 1885 | super().__init_subclass__(**kwargs) |
| 1886 | if cls.lockfile is None: |
| 1887 | raise ValueError( |
| 1888 | "{}.lockfile isn't set. Set it to a unique value " |
| 1889 | "in the base class.".format(cls.__name__) |
| 1890 | ) |
| 1891 | |
| 1892 | @classmethod |
| 1893 | def setUpClass(cls): |