def __init__(self, path):
        if '{version}' not in path:
            raise ValueError(
                "Your file persister path must have a {version} placeholder,"
                "e.g., model-{version}.pickle."
                )
        self.path = path
:param str path:
dataset/ETHPy150Open ottogroup/palladium/palladium/persistence.py/File.__init__