迭代器生成器复习

　　

# 用生成器实现处理文件，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输出到屏幕

def func(filename, fileinfo):
    with open(filename, mode='r', encoding='utf-8') as f:
        for line in f:
            if fileinfo in line:
                yield fileinfo

filename = input("请输入文件名：")
fileinfo = input("请输入要查找的内容：")

g = func(filename, fileinfo)

for i in g:
    print(i.strip())





# 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 func1(filename):
    with open(filename, mode='r', encoding='utf-8') as f:
        for line in f:
                yield '****' + line

for i in func1('text.txt'):
    print(i.strip())