如果语句在使用 nmap 时不起作用 Python

Question

我在让 if 语句正常工作时遇到了一些麻烦。在 iplist.txt 的末尾有一个我不想运行的空行，但由于某种原因，它仍在运行。我尝试删除文件的最后一行，但它只删除最后一个合法行而不是空行，我什至尝试删除空格、空行和空行，但它仍然会与一行一起运行。最奇怪的部分是空白在 if 块和 else 块中都运行。

 with open ("iplist.txt", "r") as file:

     filecontents = file.read()

     for line in filecontents.split('\n'):

      filename = (line) + ".txt "

      command = "nmap -O -oG " + ".\\ips\\" + (filename) + (line)

      print(command)

      print(filename)

      strlen = int (len(filename))

      print(strlen)

      compareline = line[:4]

      print(compareline)

      if compareline == beginline: #beginline is declared as 10.9 earlier in the file

       print("Testing 1..2...")

       os.system(command)

       filenameforos = (line + ".txt")

       #detailedosdetection = open(filenameforos)

       #next(filecontents)

      else:

       print("Testing...")

       del line

       #next(StopIteration)

这里是iplist.txt的内容

10.9.10.38

10.9.10.45

10.9.11.10

#extra line

编辑

我试过了，但它没有运行循环，我确定我做错了。

with open ("iplist.txt", "r") as file:

 filecontents = file.read()

 lines = file.readlines()

 lines = [x.strip() for x in lines]

 print("Creating list")

 for line in lines:

  filename = (line) + ".txt "

  command = "nmap -O -oG " + ".\\ips\\" + (filename) + (line)

  print(command)

  print(filename)

  strlen = int (len(filename))

  print(strlen)

  compareline = line[:4]

  print(compareline)

  if compareline == beginline: #beginline is declared as 10.9 earlier in the file

   print("Testing 1..2...")

   os.system(command)

   filenameforos = (line + ".txt")

   #detailedosdetection = open(filenameforos)

   #next(filecontents)

  else:

   print("Testing...")

   del line

   #next(StopIteration)

Answer 1

Python 有一种方法可以读取单独的行。尝试lines = file.readlines()lines = [x.strip() for x in lines] #To remove unneccesary white spaces and "\n"而不是在“\n”上拆分文件