遍历字典以查找最常用的单词

def find_most_common_word(dictionary):
    word_count = {}  # 用于记录单词出现次数的字典

    # 遍历字典，统计单词频率
    for sentence in dictionary.values():
        words = sentence.split()  # 将句子拆分为单词列表
        for word in words:
            if word in word_count:
                word_count[word] += 1
            else:
                word_count[word] = 1

    # 查找最常用的单词
    most_common_word = None
    max_count = 0
    for word, count in word_count.items():
        if count > max_count:
            most_common_word = word
            max_count = count

    return most_common_word

# 示例字典
dictionary = {
    "sentence1": "This is a test sentence.",
    "sentence2": "Another test sentence for demonstration."
}

# 调用函数查找最常用的单词
result = find_most_common_word(dictionary)
print("最常用的单词是:", result)