上下文感知类型类

class ContextAwareInteger:
    def __init__(self, initial_value):
        self._value = initial_value
        self._context = {}

    def set_context(self, context):
        self._context = context

    def get_value(self):
        if 'multiplier' in self._context:
            return self._value * self._context['multiplier']
        return self._value

    def set_value(self, value):
        self._value = value

context_aware_int = ContextAwareInteger(10)

context = {'multiplier': 2}
context_aware_int.set_context(context)

print(context_aware_int.get_value())  # 输出：20

context = {'multiplier': 3}
context_aware_int.set_context(context)
print(context_aware_int.get_value())  **输出：30**