如何使用 Python 读取列和行并遍历条目？

Question

我有一个 CSV 文件，列中包含主机地址，行中包含它们的端口，我想遍历列，然后扫描行中的相应端口。

我想出了这段代码，如果我手动使用带有主机 IP 和端口的单元，这将有效。

import socket
import csv

lst = [1,2,3,4,5,6,7,8,9]
 
line_number = 0

while line_number  < len(lst):
    line_number  = int(line_number +1)
    
with open('temp.csv', 'rt') as f:
    mycsv = csv.reader(f)
    mycsv = list(mycsv)
    h = mycsv[line_number][0] 
    line_number  = int(line_number +1)
while line_number  < len(lst): 
    line_number  = int(line_number +1)
with open('temp.csv', 'rt') as f:
    mycsv = csv.reader(f)
    mycsv = list(mycsv)
    p = mycsv[line_number][2] 


s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

host = h
port = int(p)

def portScanner(port):
    if s.connect_ex((host, port)):
        print("Closed")
    else:
        print("Open")

portScanner(port)

CSV 示例

ip,port 
1.1.1.1,80,443,22
2.2.2.2,80,21,22
3.3.3.3,111,22,21
.
.
.
.

谢谢！

Answer 1

首先使用next() 跳过您的标题。然后，您可以通过首先获取ip 地址然后使用Python 的* 运算符将所有其他条目读取为ports 来读取每一行。例如：

例如：

import csv
import socket

def portScanner(ip, port):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    
    if s.connect_ex((ip, port)):
        print(f"  Port {port}: Closed")
    else:
        print(f"  Port {port}: Open")


with open('temp.csv') as f_input:
    csv_input = csv.reader(f_input)
    header = next(csv_input)
    
    for ip, *ports in csv_input:
        print(f"IP: {ip}")
    
        for port in ports:
            portScanner(ip, int(port))