Question

我有使用tkinter作为我的GUI的程序。我的程序单击一个按钮以发送电子邮件。一旦他们单击该按钮，也会出现一个条目/按钮，以便用户可以输入其电子邮件来发送消息。单击该按钮后，即会将邮件发送到该电子邮件。

但是，当我单击第一个按钮（发送电子邮件）时，我得到了正确的错误：

{'': (555, b'5.5.2 Syntax error. i72sm3973288itc.11 - gsmtp')}

该错误发生在我什至无法在输入框中输入电子邮件地址之前。我正在尝试成功输入电子邮件地址并向该电子邮件发送消息，但到目前为止失败。

这是我的代码：

from tkinter import *
import smtplib

root = Tk()


def create_button():
    email_btn = Button(root, text="SEND AN EMAIL", fg='blue',
                       command=lambda: get_email())
    email_btn.pack()


def get_email():
    entry_email = StringVar()
    entry_email.get()

    email = Entry(root, textvariable=entry_email)
    email.pack()

    send_btn = Button(root, text="SEND", command=send_email_info(entry_email))
    send_btn.pack()


def send_email_info(entry_email):
    try:

        prompt_msg = "THIS IS A MESSAGE FOR THE EMAIL"
        user = '*****@gmail.com'
        password = '******'

        sender = entry_email.get()

        subject = "EMAIL TEST "
        message = "Subject: {} \n\n{}".format(subject, prompt_msg)
        send_to = ("{}".format(sender))

        mail = smtplib.SMTP_SSL('smtp.gmail.com', 465)
        mail.ehlo()
        mail.login(user, password)
        mail.sendmail(user, send_to, message)
        mail.close()
        print("Success Email!")
        email_cmd = Label(root, text="Email Sent!")
        email_cmd.pack()

    except Exception as x:
        print("FAILED")
        print(x)

def main():
    create_button()
    root.mainloop()

main()

Answer 1

首先，您不需要entry_email.get()，这只是从小部件获取字符串，而且无论如何您都不捕获返回值。您确实需要entry_email.get()而不是entry_email作为send_btn函数的参数。它过早评估的原因是因为您没有像在代码的第一部分中那样使用lambda函数（就像您每次在函数的回调中包含参数时都应使用）。我认为您正在寻找类似的代码：

from tkinter import *
import smtplib

root = Tk()


def create_button():
    email_btn = Button(root, text="SEND AN EMAIL", fg='blue',
                       command=lambda: get_email())
    email_btn.pack()


def get_email():
    entry_email = StringVar()
    # entry_email.get() # you don't need this, it does nothing

    email = Entry(root, textvariable=entry_email)
    email.pack()
    # function below needs a lambda
    send_btn = Button(root, text="SEND", command=lambda: send_email_info(entry_email.get()))
    send_btn.pack()


def send_email_info(entry_email):
    try:

        prompt_msg = "THIS IS A MESSAGE FOR THE EMAIL"
        user = '*****@gmail.com'
        password = '******'

        sender = entry_email

        subject = "EMAIL TEST "
        message = "Subject: {} \n\n{}".format(subject, prompt_msg)
        send_to = ("{}".format(sender))

        mail = smtplib.SMTP_SSL('smtp.gmail.com', 465)
        mail.ehlo()
        mail.login(user, password)
        mail.sendmail(user, send_to, message)
        mail.close()
        print("Success Email!")
        email_cmd = Label(root, text="Email Sent!")
        email_cmd.pack()

    except Exception as x:
        print("FAILED")
        print(x)

def main():
    create_button()
    root.mainloop()

main()

PYTHON：使用输入/按钮tkinter错误发送电子邮件

1 个答案: