# 3.处理文件,用户指定要查找的文件和内容,将文件中包含要查找内容的每一行都输出到屏幕
# def check_file(filename,aim):
# with open(filename,encoding='utf-8') as f: #句柄 : handler,文件操作符,文件句柄
# for i in f:
# if aim in i:
# yield i
#
# g = check_file('1.复习.py','生成器')
# for i in g:
# print(i.strip())
# 4.写生成器,从文件中读取内容,在每一次读取到的内容之前加上‘***’之后再返回给用户。
# def check_file(filename):
# with open(filename,encoding='utf-8') as f: #句柄 : handler,文件操作符,文件句柄
# for i in f:
# yield '***'+i
#
# for i in check_file('1.复习.py'):
# print(i.strip())