在python中，如何检测输入输出文件之间的重复，防止在输出文件中添加重复项？

Question

我正在编写一个python程序来管理FreeRadius中的用户帐户服务器。如果我不想在输出文件中添加任何重复的帐户 (用户.conf)。如何更改adduser命令（用于创建单个帐户）和au命令（用于导入文件以创建多个帐户）中的代码？你知道吗

用户名由行中第一个单词的5位数字组成。我不希望在创建用户帐户后在输出文件中重复它。你知道吗

• 首选输出文件：
• 81045用户密码==“81045”
• 56811用户密码==“56811”
• 56287用户密码==“56287”
• 654用户密码==“65654”
• 99737用户密码==“99737”

• 56185用户密码==“56185”

• 我不希望出现这种输出：

• 81045用户密码==“81045”
• 81045用户密码==“56811”
• 654用户密码==“56287”
• 654用户密码==“65654”
• 99737用户密码==“99737”

• 56185用户密码==“56185”

    def adduser():
    with open('C:/FreeRADIUS.net/etc/raddb/users.conf', "r+") as fh:
    completed_lines = set()
    for line in open('C:/FreeRADIUS.net/etc/raddb/users.conf', "r"):
      if createuserentry.get() and createuserpwd.set() not in completed_lines:
         fh.write('\n')
         fh.write(createuserentry.get() + "     " + "User-Password == " + '"' + createuserpwd.get() + '"')
         fh.write('\n')
         fh.close()
         tkMessageBox.showinfo("success", "Account created")
      else:
          fh.close()
          tkMessageBox.showinfo("Failure", "Username is duplicated")
  
  
  
  def au():
  au.filename = tkFileDialog.askopenfilename(initialdir = "/",title = "Select file to open",filetypes = (("txt","*.txt"),("all files","*.*")))
  print(au.filename)
  completed_lines_hash = set()
  with open('C:/FreeRADIUS.net/etc/raddb/users.conf', 'a') as output_file:
     with open(au.filename, "r") as input_file:
  for line in open(au.filename, "r"):
      hashValue = hashlib.md5(line.rstrip().encode('utf+8')).hexdigest()
      if hashValue not in completed_lines_hash:
          output_file.write(line)
          completed_lines_hash.add(hashValue)
  
   output_file.close()  
   tkMessageBox.showinfo("success", "Accounts created and all duplicate items are ignored")
  
  
  def deleteuser():
  with open('C:/FreeRADIUS.net/etc/raddb/users.conf', "r") as fh:
  lines = fh.readlines()
  with open('C:/FreeRADIUS.net/etc/raddb/users.conf', "w") as fh:
  for line in lines:                  
      if deleteuserentry.get() in line and  deleteuserpwd.get() == "Pa$$w0rd123" :
         tkMessageBox.showinfo("success", "Account Deleted")
         end()
  
  
  
  def du():
  du.filename = tkFileDialog.askopenfilename(initialdir = "/",title = "Select file",filetypes = (("text document","*.txt"),("all files","*.*")))
  print(du.filename)
  with open(du.filename, "r") as input_file:
  with open('C:/FreeRADIUS.net/etc/raddb/users.conf', 'w+') as output_file:
  for line in input_file:
      if "User" in line: continue
      output_file.write()
  
  output_file.close() 
  tkMessageBox.showinfo("success", "Accounts deleted")