我在获取列表而不是绑定方法时遇到问题

import random
from random import randint as rand
upperCase = chr(rand(65,66))
lowerCase = chr(rand(97,122))
class PasswordLetters:
    
    def __init__(self):
        pass
    
    
    def generateCapitalCaseLetter(self):
        
        uppCase = chr(rand(65,91))
        return uppCase
    
    def generateLowerCaseLetter(self):
        lowCase = chr(rand(97,122))
        return lowCase
    
    def generateSpecialLetter(self):
        specLet = random.choice(specialCharacters)
        return specLet
    
    def generateNumber(self):
        num = rand(1,99)
class PasswordGenerator:
    
    def __init__(self,uppCase,lowCase,specLet,num):
        self.uppCaseList = []
        lowCaseList = []
        specLet = []
        numList = []
        self.passLetter = PasswordLetters()
        for i in range(0,uppCase):
            self.uppCaseList.append(self.passLetter.generateCapitalCaseLetter)


password = PasswordGenerator(1,1,1,1)
password.uppCaseList

所以我面临的问题是,当我试图从我的密码对象中获取uppCaseList时,它会作为列表中的一个方法而不是列表中的一个字母返回给我。我想问题出在我的PasswordLetters课上,但我想不出来。 我唯一想要的就是 暗语UPP案例列表