如何将终端的输出写入格式的文件？

Question

I want to save result of script to file. Example of script:

import os

def scan_ip():
    ip2 = raw_input('Enter ip of target: ')
    target = 'nmap -sP {}'.format(ip2)
    os.system(target + > '123.txt')

Answer 1

with open('123.txt', 'w') as my_file:
    my_file.write(target)

Answer 2

You should not do in this way. First you need to call the external command with output captured , and then write the output you captured to a file:

import subprocess

ip2 = raw_input('Enter ip of target: ')
p = subprocess.Popen(["nmap", "-sP", ip2], stdout=subprocess.PIPE)
out, err = p.communicate()
with open('123.txt', 'w') as f:
    f.write(out)