如何阻止我的程序生成相同的密钥？

Question

我写了一个密码生成器，我遇到了这个烦人的问题，它是在同一行重复一个数字或字母。用户给程序一个格式，说明他们希望如何生成他们的密码，例如“C @@ d %%%” 其中@只是字母，而％只是数字，用户还输入数字和字母以生成密码，那么该程序是假设打印出像cold123这样的东西，而是打印出cood111或clld111，我会在下面发布我的代码片段，但请不要说坏话，我对python相当陌生，自学成才，几个月后进入蟒蛇体验。

class G() 
    . 
    . 
    . 

    # self.forms is the format the user input they can input things such as C@@d%%% 
    # where @ is only letters and where % is only numbers 

    # self.Bank is a list where generated things go 

    AlphaB = [] #list Of All Of The Positions That have The @ sign in The self.forms 
    NumB = [] #list of All of the positions that have a % sign 
    for char in self.forms: 
     if char == '@': 
      EOL=(self.Position) # Positions End Of Line 
      Loc = self.forms[EOL] # Letter 
      AlphaB.append(EOL) 


     if char == '%': 
      EOL=(self.Position) 
      Loc = self.forms[EOL] 
      NumB.append(EOL) 
     self.Position+=1 # Move right a position 

    for pos in AlphaB: 
     for letter in self.alphas: #letters in The User Inputs 
      GenPass=(self.forms.replace(self.forms[pos],letter)) 
      #Not Fully Formatted yet, because Only The letter been formatted 
      if GenPass.find('%'): 
       for Pos in NumB: 
        for number in self.ints: 
         GenPass=(GenPass.replace(GenPass[Pos],number)) 
         if GenPass not in self.Bank: 
          #Cood111 
          print (GenPass) 
          self.Bank.append(GenPass) 

      else: 
       if GenPass not in self.Bank: 
        print (GenPass) 
        self.Bank.append(GenPass) 

Answer 1

GenPass.replace(GenPass[Pos],number)将与number值替换在GenPass[Pos]每出现的字符。您需要确保一次替换一个角色。

Answer 2

创建一个包含所有num的所有字符和列表的列表，然后通过使用list.pop（randint（0，len（list）-1）选择一个列表，您将始终选择一个不同的字母/数字，像这样但你也会被限制在10位数字（0-9）和20个字母之内。