持久化存储

# Access the storage interfacestorage = self.session.storage

def set(self, key: str, val: bytes) -> None:    """    Store data in persistent storage        Parameters:        key: Unique identifier for your data        val: Binary data to store (bytes)    """    pass

# String data (must convert to bytes)storage.set("user_name", "John Doe".encode('utf-8'))# JSON dataimport jsonuser_data = {"name": "John", "age": 30, "preferences": ["AI", "NLP"]}storage.set("user_data", json.dumps(user_data).encode('utf-8'))# File datawith open("image.jpg", "rb") as f:    image_data = f.read()    storage.set("profile_image", image_data)

def get(self, key: str) -> bytes:    """    Retrieve data from persistent storage        Parameters:        key: Unique identifier for your data            Returns:        The stored data as bytes, or None if key doesn't exist    """    pass

# Retrieving string dataname_bytes = storage.get("user_name")if name_bytes:    name = name_bytes.decode('utf-8')    print(f"Retrieved name: {name}")# Retrieving JSON dataimport jsonuser_data_bytes = storage.get("user_data")if user_data_bytes:    user_data = json.loads(user_data_bytes.decode('utf-8'))    print(f"User preferences: {user_data['preferences']}")

def delete(self, key: str) -> None:    """    Delete data from persistent storage        Parameters:        key: Unique identifier for the data to delete    """    pass