Question

这是我的代码：

class Email_Stuff():
    def __init__(self):
        self.emailaddr = None
        self.recipaddr = None
        self.EmailUser = None
        self.EmailPass = None
    def From_Email(self):
        self.emailaddr = turtle.textinput("Your Email", "What is your email address?")
    def To_Email(self):
        self.recipaddr = turtle.textinput("Client Email", "What is your client's email address?")
    def Email_Username(self):
        self.EmailUser = turtle.textinput("Your Email Username", "What is your email username?")
    def Email_Password(self):
        self.EmailPass = turtle.textinput("Your Email Password", "What is your email Password?")
    def Send_Email(self):
        print (self.emailaddr) #these are here for me to see if it is the right input
        print(self.recipaddr)
        print(self.EmailUser)
        print(self.EmailPass)
        import smtplib
        server = smtplib.SMTP('smtp.gmail.com', 587)
        server.login((self.EmailUser),(self.EmailPass))
        self.message = "Python Test Email"
        server.sendmail(self.emailaddr,self.recipaddr,self.message)

我有一个连接到Email_Stuff.From_Email的按钮和一个连接到Email_Stuff.From_Email等的按钮......

每当我按下按钮打开龟窗时，它就会给我这个错误：

Exception in Tkinter callback
Traceback (most recent call last):
Fileline "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/tkinter/__init__.py", 1475, in __call__
return self.func(*args)
TypeError: From_Email() missing 1 required positional argument: 'self'

但是如果我从From_Email和To_Email等中取出自我。

class Email_Stuff():
    def __init__(self):
        self.emailaddr = None
        self.recipaddr = None
        self.EmailUser = None
        self.EmailPass = None
    def From_Email():
        self.emailaddr = turtle.textinput("Your Email", "What is your email address?")
    def To_Email():
        self.recipaddr = turtle.textinput("Client Email", "What is your client's email address?")
    def Email_Username():
        self.EmailUser = turtle.textinput("Your Email Username", "What is your email username?")
    def Email_Password():
        self.EmailPass = turtle.textinput("Your Email Password", "What is your email Password?")
    def Send_Email(self):
        print (self.emailaddr) #these are here for me to see if it is the right input
        print(self.recipaddr)
        print(self.EmailUser)
        print(self.EmailPass)
        import smtplib
        server = smtplib.SMTP('smtp.gmail.com', 587)
        server.login((self.EmailUser),(self.EmailPass))
        self.message = "Python Test Email"
        server.sendmail(self.emailaddr,self.recipaddr,self.message)

我收到此错误消息（这不是全部）：

    self.emailaddr = turtle.textinput("Your Email", "What is your email address?")
    NameError: global name 'self' is not defined

这是按钮代码：

Email_Button = Button(root, text='Enter Your Email', command=Email_Stuff.From_Email)
Email_Button.pack()
Email_Button.place(x=250,y=210)

请帮忙！对不起，我很抱歉

Answer 1

我认为你遇到了以下问题。如果您参加以下课程F：

class F():
     def foo(self):
         return 1

并尝试拨打F.foo()，您应该收到类似于您所看到的错误。

>>> F.foo()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unbound method foo() must be called with F instance as first argument (got nothing instead)

您需要做的是，在foo()的对象上致电F：

>>> f=F()
>>> f.foo()
1

我有一个连接到Email_Stuff.From_Email的按钮和一个按钮连接到Email_Stuff.From_Email等......

您可能需要实例化Email_Stuff的对象，然后调用yourobject.From_Email()。（如果您的班级Email_Stuff也包含GUI按钮处理程序内容，您只需从按钮处理程序中调用self.From_Email()

Answer 2

在调用方法之前，您是否创建了Email_Stuff的实例？因为self是调用方法的当前对象所以需要它。

class A():
    def __init__(self, attr):
        self.attr = attr
    def func(self):
        print(self.attr)

a = A(42)
a.func() # print 42
# or
A(32).func() # print 32

Answer 3

还可以避免在函数中写“ self”，例如：

>>> class F():
        def foo():
            return 1

>>> F.foo()

..: 1

缺少1个必要的位置参数：'self'

3 个答案: