通过在Python中从一个csv读取NSLOOKUP并将其写入另一个csv来执行NSLOOKUP

我一直在尝试进行NSLOOKUP，并将值写入csv文件

My file1.csv：

Hostname  
abc1  
def2  
fgh3   
.  
.  
.  
and so on  

我想对这些主机名执行nslookup，并将FQDN写入file2.csv，如下所示：

Hostname FQDN  
abc1 abc1.na.edu  
def2 bcd2.sa.edu  
fgh3 fgh3.ea.edu  
.  
.  
and so on

这是我的代码：

import socket
import csv
name = []
with open('file1.csv', 'r', newline='') as csvinput:
 reader = csv.reader(csvinput)

for line in csvinput:
 name = socket.getfqdn(line)
 with open('file2.csv', 'w', newline='') as csvoutput:
  fieldnames = (['Hostname', 'FQDN'])
  output = csv.writer(csvoutput)
  output.writerow(fieldnames)
  output.writerow([name])

我只能在输出文件中获取一个随机主机名的一个fqdn。尽管如此，当我只使用“print（name）”时，它会提供控制台中的所有FQDN。我知道我遗漏了什么，请帮忙

对代码进行了一些更改：

import socket
import os
import csv
name = {}
CI = {}
with open('file1.csv', 'r', newline='') as csvinput:
    reader = csv.DictReader(csvinput)

    # status = [row['FQDN'] for row in rows]

    for rows in reader:
        CI = rows['CI_Name']
        name = socket.getfqdn(CI)
        with open('file2.csv', 'a', newline='') as csvoutput:
                output = csv.writer(csvoutput)
                #fieldnames = ['CI_Name', 'FQDN']
                #output = csv.DictWriter(csvoutput, fieldnames=fieldnames)
                #output.writerow(rows)
                output.writerows([[CI] + [name]])

我可以打印名称和相应的FQDN，但无法打印csv列上的标题，即“CI_名称”和“FQDN”

import socket
import os
import csv
name = {}
CI = {}
with open('file1.csv', 'r', newline='') as csvinput:
    reader = csv.DictReader(csvinput)

    # status = [row['FQDN'] for row in rows]

with open('file2.csv', 'w', newline='') as csvoutput:
    fieldnames = ['CI_Name', 'FQDN']
    output = csv.DictWriter(csvoutput, fieldnames=fieldnames)
    output.writeheader()

for rows in reader:
    CI = rows['CI_Name']
    name = socket.getfqdn(CI)
    with open('file2.csv', 'a', newline='') as csvoutput:
       output = csv.writer(csvoutput)
       output.writerows([[CI] + [name]])