TypeError: sowohl int als auch float

Question

class Account(object): 
    def __init__(self,holder, number, balance, credit_line = 1500): 
     self.holder = holder 
     self.number = number 
     self.balance = balance 
     self.credit_line = credit_line 

    def deposit(self, amount): 
     self.balance = amount 
    def withdraw(self, amount): 
     if(self.balance - amount < -self.credit_line): 
      return False 
     else: 
      self.balance -= amount 
      return True 

    def balance(self): 
     return self.balance 
    def holder(self): 
     return self.holder 

    def transfer(self, target, amount): 
     if(self.balance - amount < -self.credit_line): 
      #coverage insufficient 
      return False 
     else: 
      self.balance -= amount 
      target.balance += amount 
      return True 
Guido = Account("Guido", 10 ,1000.50) 
Guido.balance() 
------------------------------------------------------------------------- 


Traceback (most recent call last): 
    File "Account.py", line 31, in <module> 
    Guido.balance() 
TypeError: 'float' object is not callable 

Answer 1

Sie überschreiben Methode balance in Ihrer __init__ Methode. Sie könnten entweder den Feldnamen in _balance ändern oder einfach balance entfernen und Guido.balance verwenden.

Beachten Sie auch, dass Sie Ihre Variablen beginnend mit Kleinbuchstaben Name sollte (dh guido = Account(...), nicht Guido)

Answer 2

class Account(object): 
    def __init__(self,holder, number, balance, credit_line = 1500): 
     self.holder = holder 
     self.number = number 
     self.balance = balance 
     self.credit_line = credit_line 

    def deposit(self, amount): 
     self.balance = amount 
    def withdraw(self, amount): 
     if amount > self.balance: 
      print "Amount greater than available balance" 

     else: 
      self.balance -= amount 
      return True 

    def bala_nce(self): 
     return self.balance 
    def hold_er(self): 
     return self.holder 
    def num(self): 

     return self.number 


    def transfer(self, target, amount): 
     if(self.balance - amount < -self.credit_line): 
      #coverage insufficient 
      return False 
     else: 
      self.balance -= amount 
      target.balance += amount 
      return True 

guido = Account("Guido", 10 ,10000.100) 
guido.withdraw(2300.100) 

print "Account name: " ,guido.hold_er() 
print "available balance: $",guido.bala_nce() 

thanx Sie bald ............... es funktioniert jetzt