如何实现一个“趋势计数器”来使用滑动窗口来统计单词？

from collections import defaultdict

class TrendingCounter:
    def __init__(self, window_size):
        self.window_size = window_size
        self.word_counts = defaultdict(int)
        self.window = []

    def update(self, word):
        # 添加新单词到滑动窗口
        self.window.append(word)
        if len(self.window) > self.window_size:
            # 移除窗口中最旧的单词
            removed_word = self.window.pop(0)
            # 更新计数器
            self.word_counts[removed_word] -= 1

        # 更新计数器
        self.word_counts[word] += 1

    def get_counts(self):
        return self.word_counts

# 示例用法
counter = TrendingCounter(5)  # 设置滑动窗口大小为5
text = "This is a sample text for testing the trending counter implementation"
words = text.split()

for word in words:
    counter.update(word)

counts = counter.get_counts()
print(counts)