Question

我目前正在开发一个python tkinter应用程序，它允许用户使用GUI窗口向用户发送电子邮件。我在python 3.4.2上运行，并创建了[登录]窗口和[撰写消息]窗口。在我的程序中，我创建了许多用户输入数据的条目，一个用于电子邮件，密码，消息，主题，到等等。然后我有一个函数print（）输出用户输入的所有数据。唯一的问题是控制台中只显示3/6条目结果。有人可以看看我的代码并告诉我有什么问题。我的朋友请不要标记我的问题，我只是想了解为什么这不起作用，所以我可以在这上面工作并在网上发布，如果你想我可以在工作中把你归功于＃＆＃ 39; s你想要的;）下面我提供了控制台输出的屏幕截图，以及我创建的2个不同的窗口。

代码：

#-->Project name : Email Buddy
#-->Project start date : Monday, August 24th, 2015.
#-->Project written by : Pamal Mangat.
#-->Project end date :

#Imports
from PIL import Image, ImageTk
import webbrowser
import email
import sys
import smtplib
import tkinter

def sendMail(recipient, sender, subject, message, password):
    #Function sends the email.
    msg = email.message_from_string(message)
    msg['From'] = sender
    msg['To'] = recipient
    msg['Subject'] = subject
    connect = smtplib.SMTP("smtp.live.com",587)
    connect.ehlo()
    connect.starttls() 
    connect.ehlo()
    connect.login(password, password)
    connect.sendmail(sender, recipient, msg.as_string())
    connect.quit()

def root():

    def testInfo(email, password, sender, reciever, message, subject):
        #Function checks if all info is entered.
        print("Email : " + email)
        print("Password : " + password)
        print("From : " + sender)
        print("To : " + reciever)
        print("Message : " + message)
        print("Subject : " + subject)

    #Created a send message (compose message) window (root = Compose Message) >>> User is redirected to this page after signing in.
    root = tkinter.Tk()
    root.title("Email Buddy | Compose Message")

    #Root text
    root_text1 = tkinter.Label(root, text="To", font="Bizon 20 bold", fg="Red")
    root_text1.place(x=20, y=50)

    root_text2 = tkinter.Label(root, text="Subject", font="Bizon 20 bold", fg="Red")
    root_text2.place(x=20, y=145)

    root_text3 = tkinter.Label(root, text="Message", font="Bizon 20 bold", fg="Red")
    root_text3.place(x=20, y=235)

    #Root entries
    to_Variable = tkinter.StringVar()
    to_Entry = tkinter.Entry(root, bd=4, width=28, textvariable=to_Variable, font="Helvetica 16 italic")
    to_Entry.focus()
    to_Entry.place(x=20, y=95)

    subject_Variable = tkinter.StringVar()
    subject_Entry = tkinter.Entry(root, bd=4, width=28, textvariable=subject_Variable, font="Helvetica 16 italic")
    subject_Entry.focus()
    subject_Entry.place(x=20, y=190)

    message_Variable = tkinter.StringVar()
    message_Entry = tkinter.Entry(root, textvariable=message_Variable, bd=4, width=28, font="Helvetica 16 italic")
    message_Entry.focus()
    message_Entry.place(x=20, y=280)

    email = email_Variable.get()
    password = password_Variable.get()
    sender = email_Variable.get()
    reciever = to_Variable.get()
    message = message_Variable.get()
    subject = subject_Variable.get()

    send_Button = tkinter.Button(root, text="Send", fg="White", bg="Green", width=8, height=2, font="Bizon 8 bold", command=lambda:testInfo(email, password, sender, reciever, message, subject))
    send_Button.place(x=300, y=355)

    #Locks window size.
    root.minsize(385,425)
    root.maxsize(385,425)

    #Changes favicon in upper-left corner of master window.
root.iconbitmap(r"C:\Users\Pamal\Desktop\Documents\Python Folder\Python Projects\Email Buddy\Images\EmailBuddy_Icon.ico")

    root.mainloop()

#Created a main log in window (master = Log In).
master = tkinter.Tk()
master.title("Email Buddy | Log In")

#Master text
master_text = tkinter.Label(master, text="Sign In", font="Bizon 36 bold", fg="Red")
master_text.place(x=90, y=20)

master_text2 = tkinter.Label(master, text="Email", font="Bizon 20 bold")
master_text2.place(x=20, y=100)

master_text3 = tkinter.Label(master, text="Password", font="Bizon 20 bold")
master_text3.place(x=20, y=190)

#Master entries
email_Variable = tkinter.StringVar()
email_Entry = tkinter.Entry(master, bd=4, width=25, textvariable=email_Variable, font="Helvetica 16 italic", fg="Red")
email_Entry.focus()
email_Entry.place(x=20, y=140)

password_Variable = tkinter.StringVar()
password_Entry = tkinter.Entry(master, bd=4, width=25,        textvariable=password_Variable, font="Helvetica 16 italic", fg="Red")
password_Entry.focus()
password_Entry.place(x=20, y=230)

#Sign-In Button
signIn_Button = tkinter.Button(master, text="Sign In", font="Bizon 8 bold", fg="White", bg="Green", width=8, height=2, command=lambda:root())
signIn_Button.place(x=265, y=295)

#Locks window size
master.minsize(350, 350)
master.maxsize(350, 350)

#Changes favicon in upper-left corner of master window.
master.iconbitmap(r"C:\Users\Pamal\Desktop\Documents\Python Folder\Python Projects\Email Buddy\Images\EmailBuddy_Icon.ico")

master.mainloop()

截图：

第一个窗口

第二个窗口

在控制台中输出

Answer 1

问题的关键在于，当您第一次创建按钮时，您将获得变量的值，此时，to，subject和message为空白。

编写GUI的正确方法是在需要时获取值，而不是之前。这消除了lambda的需要; lambda很少是真正必要的，它使代码更难编写，更难理解，更难修改。

另外，我的建议是不使用StringVars，并修改testInfo以在需要时获取数据。使用StringVar只是您需要跟踪的另一个对象，除非您正在使用这些对象的特殊功能（您不是这样），否则完全没有必要。

def testInfo():
    reciever = to_Entry.get()
    email = email_Entry.get()
    password = password_Entry.get()
    sender = email_Entry.get()
    message = message_Entry.get()
    subject = subject_Entry.get()

    print("Email : " + email)
    print("Password : " + password)
    print("From : " + sender)
    print("To : " + reciever)
    print("Message : " + message)
    print("Subject : " + subject)

...
send_Button = tkinter.Button(..., command=testInfo)

Answer 2

只是一个额外的提示：而不是定义根的最小和最大大小。你可以简单地做：

root.resizable(False, False)

第一个假代表x轴而另一个假代表y ..

Python [Tkinter]应用程序不显示所有信息

2 个答案: