如何计算包含特定字母的列表中的单词数量？

def count_words_with_letter(word_list, letter):
    count = 0
    for word in word_list:
        if letter in word:
            count += 1
    return count

# 示例用法
word_list = ['apple', 'banana', 'cat', 'dog', 'elephant']
letter = 'a'
result = count_words_with_letter(word_list, letter)
print("包含字母'{}'的单词数量为：{}".format(letter, result))