python nmap

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys
import nmap

scan_row = []
input_data = input('Please input hosts and port: ')
scan_row = input_data.split(" ")
if len(scan_row) != 2:
    print("Input errors,example \"192.168.1.0/24 80,443,22\"")
    sys.exit(0)
hosts = scan_row[0]  # 接收用户输入的主机
port = scan_row[1]  # 接收用户输入的端口

try:
    nm = nmap.PortScanner()  # 创建端口扫描对象
except nmap.PortScannerError:
    print('Nmap not found', sys.exc_info()[0])
    sys.exit(0)
except:
    print("Unexpected error:", sys.exc_info()[0])
    sys.exit(0)

try:
    nm.scan(hosts=hosts, arguments=' -v -sS -p ' + port)  # 调用扫描方法，参数指定扫描主机hosts，nmap扫描命令行参数arguments
except Exception as e:
    print("Scan erro:") + str(e)

for host in nm.all_hosts():  # 遍历扫描主机
    print('----------------------------------------------------')
    print('Host : %s (%s)' % (host, nm[host].hostname()))  # 输出主机及主机名
    print('State : %s' % nm[host].state())  # 输出主机状态，如up、down

    for proto in nm[host].all_protocols():  # 遍历扫描协议，如tcp、udp
        print('----------')
        print('Protocol : %s' % proto)  # 输入协议名

        lport = nm[host][proto].keys()  # 获取协议的所有扫描端口

        for port in lport:  # 遍历端口及输出端口与状态
            print('port : %s\tstate : %s' % (port, nm[host][proto][port]['state']))
print(scan_row)