def create_from(cls, db, fs, overwrite=None, root=None):
        """Instantiate a TinyDbObserver with an existing db and filesystem."""
        self = cls.__new__(cls)  # skip __init__ call
        self.db = db
        self.runs = db.table("runs")
        self.fs = fs
        self.overwrite = overwrite
        self.run_entry = {}
        self.db_run_id = None
        self.root = root
        return self
Instantiate a TinyDbObserver with an existing db and filesystem.
sacred/observers/tinydb_hashfs/tinydb_hashfs.py