python3 ip:port格式转化成http、https格式文件

新手学习python第一个程序：

此脚本可以将ip:port格式的ip.txt文件转化成http\https格式的url.txt文件

如：

ip.txt:

1.1.1.1:80

1.1.1.1:8080

转化后：

url.txt

http://1.1.1.1:80

https://1.1.1.1:8080

http://1.1.1.1:80

https://1.1.1.1:8080

脚本如下：

#ip.txt中ip:port格式转换成http、https格式，保存到url.txt中
with open("ip.txt","r") as f:
    line = f.readlines()

with open("url.txt","w") as f2:
    for i in line:
        f2.write('http://'+i)

with open("url.txt","a+") as f3:
    f3.write('\n')

with open("url.txt","a+") as f4:
    for i in line:
        f4.write('https://'+i)