'Python is a high-level, general-purpose programming language. Its design philosophy emphasizes code readability with the use of significant indentation. Python is dynamically typed and garbage-collected.'

分割文本并删除逗号和句号

words = text.replace(',', '').replace('.', '').split()

while True: # 接收用户输入 word = input('请输入要查询的单词：')

# 判断是否退出程序
if word == 'quit':
    break

# 统计单词出现次数
count = words.count(word)

# 打印结果
print('单词 {} 在文本中出现了 {} 次。'.format(word, count))