Question

当我尝试将employeeNum和employeePass传递给名为displayButton的函数时，它告诉我我错过了这两个参数。

from tkinter import *


def displayButton(root,employNum, employPass):

    Label(root,text = employNum ).grid(row = 3, column = 1, sticky = N+S+W+E)
    Label(root, text = employPass).grid(row = 4, column = 1, sticky = N+S+W+E)

def main():

    root = Tk()

    Label(root, text = 'Employee Number: ').grid(row = 0, column = 0, sticky = W)
    Label(root, text = 'Login Password: ').grid(row = 1, column = 0, sticky = W)

    employeeNum = StringVar()
    employeePass = StringVar()
    Entry(root, textvariable = employeeNum).grid(row = 0, column = 1, columnspan = 2, sticky = W)
    Entry(root, textvariable = employeePass).grid(row = 1, column = 1, columnspan = 2, sticky = W)

    checkButton = BooleanVar()
    Checkbutton(root, text = 'Remember Me', variable = checkButton).grid(row = 2, column = 1, sticky = W)

    Button(root, text = 'Save', relief = RAISED).grid(row = 2, column = 2, sticky = E)
    display = Button(root, text = 'Display', relief = RAISED, command = lambda: displayButton(root,employeeNum,employeePass))
    display.grid(row = 3, column = 2, sticky = E)
    display.bind('<Button-1>', displayButton)

    Label(root, text = "Employee's number is ").grid(row = 3, column = 0, sticky = W)
    Label(root, text = "Employee's Passowrd is ").grid(row =4 , column = 0, sticky = W)
    root.mainloop() 

main()

它给我的错误是：

TypeError: displayButton() missing 2 required positional arguments: 'employNum' and 'employPass'

Answer 1

您无需绑定按钮，因此可以删除此行。

display.bind('<Button-1>', displayButton)

如果您正在使用StringVar()，并且想要阅读其内容，则必须使用.get()，employNum.get()和employPass.get()。

此代码应该有效：

from Tkinter import *

def displayButton(root,employNum, employPass):

    Label(root,text = employNum.get() ).grid(row = 3, column = 1, sticky = N+S+W+E)
    Label(root, text = employPass.get()).grid(row = 4, column = 1, sticky = N+S+W+E)

def main():

    root = Tk()

    Label(root, text = 'Employee Number: ').grid(row = 0, column = 0, sticky = W)
    Label(root, text = 'Login Password: ').grid(row = 1, column = 0, sticky = W)

    employeeNum = StringVar()
    employeePass = StringVar()
    Entry(root, textvariable = employeeNum).grid(row = 0, column = 1, columnspan = 2, sticky = W)
    Entry(root, textvariable = employeePass).grid(row = 1, column = 1, columnspan = 2, sticky = W)

    checkButton = BooleanVar()
    Checkbutton(root, text = 'Remember Me', variable = checkButton).grid(row = 2, column = 1, sticky = W)

    Button(root, text = 'Save', relief = RAISED).grid(row = 2, column = 2, sticky = E)
    display = Button(root, text = 'Display', relief = RAISED, command = lambda: displayButton(root, employeeNum,employeePass))
    display.grid(row = 3, column = 2, sticky = E)
    #display.bind('<Button-1>', displayButton)

    Label(root, text = "Employee's number is ").grid(row = 3, column = 0, sticky = W)
    Label(root, text = "Employee's Passowrd is ").grid(row =4 , column = 0, sticky = W)
    root.mainloop() 

main()

将多个参数传递给tkinter中的函数

1 个答案: