class ID_generator:

    def __init__(self):
        self.current_ID = -1

    def assign_ID(self):
        self.current_ID += 1
        return self.current_ID

750cc4bffaa07ccf484f56f725f2582aea66a1a8
<mask token>

class ID_generator:
    <mask token>
    <mask token>

class ID_generator:

    def __init__(self):
        self.current_ID = -1
    <mask token>

class ID_generator:

    def __init__(self):
        self.current_ID = -1

    def assign_ID(self):
        self.current_ID += 1
        return self.current_ID
