Python 小工具，字符串加单引号，逗号；比对两个文件内容重叠部分

def yh_dh():
    '''
    1、从文件中读取要加单引号与逗号的单号
    2、将读取内容添加到列表
    3、将列表循环输出到文件中
    '''
    s1 = set(open('a.txt', 'r').readlines())
    ls = []
    for l in s1:
        ls.append(l.replace("\\n", '').strip())

    # print(ls)
    f = open('单引号逗号.txt', 'w')
    for l2 in ls:
        f.write("'" + l2 + "',")
        f.write('\n')

    f.close()

def dh():
    '''
    1、从文件中读取要加逗号的单号
    2、将读取内容添加到列表
    3、将列表循环输出到文件中
    '''
    s1 = set(open('a.txt', 'r').readlines())
    ls = []
    for l in s1:
        ls.append(l.replace("\\n", '').strip())

    f = open('逗号.txt', 'w')
    for l2 in ls:
        f.write(l2 + "',")
        f.write('\n')

    f.close()

file_one = 'a.txt'
file_two = 'b.txt'
s1 = set(open(file_one, 'r').readlines())
s2 = set(open(file_two, 'r').readlines())
ins = s1.intersection(s2)
str_msg = str(ins)
s_split = str_msg.replace("\\n", '').replace("'", '').replace(" ", '').replace("{", '').replace("}", '').split(
    ',')
f = open('重复内容.txt', 'w')
for i in s_split:
    f.write(i)
    f.write('\n')

f.close()