skript.txt

class Repository:
    def __init__(self):
        self.data = {}

    def save(self, key, value):
        self.data[key] = value

    def get(self, key):
        return self.data.get(key)

    def delete(self, key):
        if key in self.data:
            del self.data[key]

    def update(self, key, value):
        if key in self.data:
            self.data[key] = value
        else:
            raise KeyError("Key not found")

    def list(self):
        return self.data.items()

# Example usage:

repo = Repository()
repo.save("key1", "value1")
repo.save("key2", "value2")
print(repo.get("key1")) # Output: "value1"
repo.update("key1", "new value")
print(repo.get("key1")) # Output: "new value"
repo.delete("key1")
print(repo.get("key1")) # Output: None
print(repo.list()) # Output: dict_items([('key2', 'value2')])