统计单词在LISP列表中的出现次数

def count_words_in_lisp_list(lst):
    word_count = {}
    
    def count_words(element):
        if isinstance(element, str):
            if element in word_count:
                word_count[element] += 1
            else:
                word_count[element] = 1
        elif isinstance(element, list):
            for sub_element in element:
                count_words(sub_element)
    
    for element in lst:
        count_words(element)
    
    return word_count

# 示例调用
lisp_list = ['apple', 'banana', ['apple', 'cherry'], 'banana', 'apple']
result = count_words_in_lisp_list(lisp_list)
print(result)

{'apple': 3, 'banana': 2, 'cherry': 1}