如何为计数器的相关元素提供类？

class Counter:
    def __init__(self, initial_count=0):
        self.count = initial_count

    def increment(self, step=1):
        self.count += step

    def decrement(self, step=1):
        self.count -= step

    def reset(self):
        self.count = 0

# 创建一个计数器对象
counter = Counter()

# 增加计数器的值
counter.increment()
print(counter.count)  # 输出：1

# 再增加计数器的值
counter.increment(3)
print(counter.count)  # 输出：4

# 重置计数器的值
counter.reset()
print(counter.count)  # 输出：0