python传递变量tkinter [英] python pass variable tkinter

问题描述

我是 Python 新手，刚开始学习 class 和 tkinter，所以请原谅我乱七八糟"的代码.我正在尝试输入一些字符串到 nr1 字段，然后单击按钮后，在控制台中打印此字符串并将此值存储以备后用:

I'm new im Python, just started to learn about class and tkinter, so forgive me "messy" code. I'm trying to enter some string to field nr1, and after click a button, print this string in console and store this value for later:

from tkinter import Tk, BOTH, RIGHT, RAISED, BOTTOM, TOP, X, StringVar
from tkinter.ttk import Frame, Button, Entry


class AD(Frame):
    def __init__(self, parent):
        Frame.__init__(self, parent, v=None, raw_input=None)
        self.parent = parent
        self.parent.geometry("250x150+300+300")
        self.parent.title("Trolollo")
        self.parent.resizable(False, False)
        self.inp = None
        self.v = StringVar()
        self.raw_input = None

        self.initUI()

    def user_input(self):
        global inp
        a = self.raw_input(self.v.get())
        inp = a
        return inp


    def initUI(self):
        self.pack(fill=BOTH, expand=True)

        frame = Frame(self, relief=RAISED, borderwidth=0)
        frame.pack(fill=BOTH, expand=True)

        self.entry1 = Entry(frame, textvariable=self.v)
        self.entry1.pack(side=TOP, fill=X, expand=False, padx=2, pady=2)
        self.entry1.focus_set()

        rename_button = Button(frame, text="Dispaly text", command =         self.user_input())
        rename_button.pack(side=TOP, expand=False, padx=2, pady=2)

        entry2 = Entry(frame)
        entry2.pack(side=TOP, fill=X, expand=False, padx=2, pady=2)


        quit_button = Button(self, text="Quit", command=self.quit)
        quit_button.pack(side=RIGHT, padx=5, pady=5)

        ok_button = Button(self, text="OK")
        ok_button.pack(side=RIGHT, padx=5, pady=5)


def main():
    root = Tk()


    app = AD(root)
    root.mainloop()


if __name__ == '__main__':
    main()

执行代码后，我得到:TypeError: 'NoneType' 对象不可调用

After executing code, i get: TypeError: 'NoneType' object is not callable

如有任何帮助，我将不胜感激

Any help would me appreciated

推荐答案

问题:

1. rename_button 的 选项command=self.user_input()"中的第一个问题.你应该给函数命名并且不执行该功能.把 () 符号意味着你在您的代码加载时执行该函数，即它执行一次无需按重命名按钮.
2. 第二个问题是您的函数 user_input 中的错误代码.这导致了您的错误消息.

1. First issue laid in your rename_button's option "command=self.user_input()". You were suppose to name the function and not execute the function. Putting the () symbol meant you executed the function when your code loaded, i.e. it executed once w/o pressing the rename button.
2. Second issue was the erroneous code in your function user_input. This caused your error msg.

答案:带有建议更正的代码.

from tkinter import *
from tkinter.ttk import *


class AD(Frame):
    def __init__(self, parent):
        Frame.__init__(self, parent, v=None, raw_input=None)
        self.parent = parent
        self.parent.geometry("250x150+300+300")
        self.parent.title("Trolollo")
        self.parent.resizable(False, False)
        self.inp = None
        self.v = StringVar()
        self.raw_input = None

        self.initUI()

    def user_input(self):
        # Get entry1 value, store it as an attribute and print to console
        self.raw_input = self.v.get()
        print(self.raw_input)


    def initUI(self):
        self.frame = Frame(self, relief=RAISED, borderwidth=0)
        self.frame.pack(fill=BOTH, expand=True)

        self.entry1 = Entry(self.frame, textvariable=self.v)
        self.entry1.pack(side=TOP, fill=X, expand=False, padx=2, pady=2)
        self.entry1.focus_set()


        #self.rename_button = Button(self.frame, text="Dispaly text",
        #                            command = self.user_input())
        self.rename_button = Button(self.frame, text="Display text",
                                    command = self.user_input)
        self.rename_button.pack(side=TOP, expand=False, padx=2, pady=2)


        # You can remove the triple quotes to display these widgets 
        """
        self.entry2 = Entry(self.frame)
        self.entry2.pack(side=TOP, fill=X, expand=False, padx=2, pady=2)


        self.quit_button = Button(self.frame, text="Quit", command=self.quit)
        self.quit_button.pack(side=RIGHT, padx=5, pady=5)

        self.ok_button = Button(self.frame, text="OK")
        self.ok_button.pack(side=RIGHT, padx=5, pady=5)

        """

        self.pack(fill=BOTH, expand=True)


def main():
    root = Tk()


    app = AD(root)
    root.mainloop()

您的图形用户界面:

建议:

• 记得把 self.在您的小部件前面.
• 一次测试一个小部件以帮助您调试代码.

这篇关于python传递变量tkinter的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！