Question

我有一个python代码，我收到以下错误：

Traceback (most recent call last):
File "C:/Users/SUVI/Desktop/SUVIwork/BankAccount.py", line 1, in <module>
class BankAccount:
File "C:/Users/SUVI/Desktop/SUVIwork/BankAccount.py", line 26, in     BankAccount
myAccount =BankAccount(00000, "XXXXXX")
NameError: name 'BankAccount' is not defined

代码：

class BankAccount: // Here I defined the class" BankAccount"
def __init__(self, acct_number, acct_name):
    self.acct_number = acct_number
    self.acct_name =acct_name
    self.balance = 0.0

def  displayBalance(self):
    print " The account balance is:", self.balance

def deposit(self, amount):
    self.banlance = self.balance + amount
    print "You deposited", amount
    print " The new balance is :", self.balance

def withdraw(self, amount):
    if self.balance >= amount:
        self.balance = self.balance - amount
        print "You withdrew", amount
        print " The new balance is:", self.balance

    else:
        print "You tried to withdraw", amount
        print " The account balance is:", self.balance
        print " Withdrawal denied. No enough funds."

myAccount =BankAccount(00000, "XXXXXX")
print "Account name :", myAccount.acct_name
print "Account number:", myAccount.acct_number
myAccount.displayBalance()

myAccount.deposit(100)
nyAccount.withdraw(57.55)
myAccount.withdraw(67.18)

我在创建类的实例之前已经定义了这个类为什么找不到我的班级？我真的很感激你的意见！

Answer 1

您的代码有几个问题

首先，您的缩进已关闭，请参阅此PEP以了解正确的缩进。

class BankAccount:
    def __init__(self, acct_number, acct_name):
        self.acct_number = acct_number
        self.acct_name =acct_name
        self.balance = 0.0

    def  displayBalance(self):
        print " The account balance is:", self.balance

    def deposit(self, amount):
        self.balance = self.balance + amount
        print "You deposited", amount
        print " The new balance is :", self.balance

    def withdraw(self, amount):
        if self.balance >= amount:
            self.balance = self.balance - amount
            print "You withdrew", amount
            print " The new balance is:", self.balance

        else:
            print "You tried to withdraw", amount
            print " The account balance is:", self.balance
            print " Withdrawal denied. No enough funds."

<强>第二
您有存款

的拼写错误

self.banlance = self.balance + amount

应该是

self.balance = self.balance + amount

<强>第三

你有一个错字

nyAccount.withdraw(57.55)

应该是

myAccount.withdraw(57.55)

<强>四
你没有使用正确的功能名称风格。

displayBalance应命名为display_balance

请参阅此PEP

中的官方命名惯例

一点建议：
好像你是在编辑器中编写代码也许你应该研究像pycharm社区版这样的IDE 这些可以帮助你处理像拼写错误和缩进这样的快乐小事。

python名称错误：class＆＃34; BankAccount＆＃34;没有定义

1 个答案: