大家写 python 的时候不会觉得 self 有点冗余吗

写这样一个简单的类用到 n 多 self ，个人觉得有点冗余，大家什么感觉？我也是初学，或者有好的方法可以避免？

class VendingMachine: """A vending machine that vends some product for some price.""" def __init__(self,stockName,stockPrice): self.stockName = stockName self.stockPrice = stockPrice self.stockNumber = 0 self.balance = 0 def vend(self): if self.stockNumber == 0: return "Machine is out of stock." elif self.balance < self.stockPrice: return 'You must deposit $' + str(self.stockPrice - self.balance) + ' more.' else: self.stockNumber -= 1 change = self.balance - self.stockPrice; self.balance = 0 if change == 0: return 'Here is your candy.' else: return 'Here is your candy and $'+ str(change) +' change.' def deposit(self,amount): self.balance += amount if(self.stockNumber == 0): return 'Machine is out of stock. Here is your $' + str(self.balance) + '.' return "Current balance: $" + str(self.balance) def restock(self,stockNumber): self.stockNumber += stockNumber return "Current candy stock: " + str(self.stockNumber)