从用户那里获取输入并在TKinter中返回答案 [英] Taking input from user and returning an answer in TKinter

问题描述

这是我在这里的第一个问题，对于任何错误，我们深表歉意.

This is my first question here so sorry for any mistakes :S.

我最近选择了python，并制作了一些非常简单的基于文本的应用程序.现在，我尝试使用适当的GUI制作一个.我有下面的代码.我已经制作了GUI，并且工作正常.除了一个小错误.

I have recently picked up python, and I have made some very simple text based application. Now I tried to make one with a proper GUI. I have the code bellow. I have made the GUI, and it's working fine. Apart of a little mistake.

这个想法是，用户输入一个数字，应用程序将返回一个斐波那契数字，该数字位于用户指定的顺序中的相同位置.但是当我尝试一下时，显示的只是用户输入的数字，而不是斐波那契数字.

The idea is that the user enters a number and the app will return a Fibonacci number that lies at the same position in the sequence as specified by the user. But when I try it out, all that is shown is the number the user put in, not the Fibonacci number.

 ##!/usr/bin/env python

import Tkinter as Tk

class App(object):
    def __init__(self):
        self.root = Tk.Tk()
        self.root.wm_title("Fibonacci Calculator")  
        self.root.wm_iconbitmap("@icon2.xbm")   
        self.label = Tk.Label(self.root, text="Set the digit number you want.")
        self.label.pack()
        self.digits = Tk.StringVar()
        Tk.Entry(self.root, textvariable=self.digits).pack()

        self.buttontext = Tk.StringVar()
        self.buttontext.set("Calculate")
        Tk.Button(self.root,
                  textvariable=self.buttontext,
                  command=self.clicked1).pack()

        def fibonacci(n):
            a = 0
            b = 1

            temp = a
            a = b
            b = temp + b

        text_display = fibonacci(self.digits)
        self.label = Tk.Label(self.root, text=text_display)
        self.label.pack()

        self.root.mainloop()

    def clicked1(self):
        digits = self.digits.get()
        self.label.configure(text=digits)

    def button_click(self, e):
        pass

App()

我知道用于计算斐波那契数的脚本是有用的，因为我分别对其进行了测试.

I know the script to calculate the Fibonacci numbers works because I tested it separately.

与TKinter有关吗?

Is it something to do with TKinter?

感谢您的帮助:)

推荐答案

以下代码可用于从Entry中获取用户输入，将其发送给函数，并获取该函数的输出并更新Label的文本:

The following code works to take user input from an Entry, send it to a function, and take the output of that function and update the text of the Label:

import Tkinter as Tk

class App(object):
    def __init__(self):
        self.root = Tk.Tk()
        self.root.wm_title("Fibonacci Calculator")
        #self.root.wm_iconbitmap("@icon2.xbm")
        self.label = Tk.Label(self.root, text="Set the digit number you want.")
        self.label.pack()
        self.digits = Tk.StringVar()
        Tk.Entry(self.root, textvariable=self.digits).pack()

        self.buttontext = Tk.StringVar()
        self.buttontext.set("Calculate")
        Tk.Button(self.root,
                  textvariable=self.buttontext,
                  command=self.clicked1).pack()

        self.label = Tk.Label(self.root, text=" ")
        self.label.pack()

        self.root.mainloop()

    def fibonacci(self, idx):
        # Your function here
        # Make sure this function accepts as its only argument the index
        return idx ** 2

    def clicked1(self):
        idx = int(self.digits.get())
        out = self.fibonacci(idx)
        self.label['text'] = out

    def button_click(self, e):
        pass

App()

剩下的就是插入/修改您的fibonacci()函数.请注意，您当前的函数无效起作用，并且您当前的实现未按需要更新标签.

All that's left is to insert / modify your fibonacci() function. Note your current function doesn't work, and your current implementation didn't update the label as you wanted.

编辑:相同的想法，只是进行了一点整理:

Edit Same idea, just cleaned up a bit:

import Tkinter as Tk

class App(object):
    def __init__(self):
        self.root = Tk.Tk()
        self.root.wm_title("Fibonacci Calculator")
        #self.root.wm_iconbitmap("@icon2.xbm")
        Tk.Label(self.root, text="Set the digit number you want.").pack()

        self.digits = Tk.StringVar()
        Tk.Entry(self.root, textvariable=self.digits).pack()
        Tk.Button(self.root, text="Calculate", command=self.clicked).pack()

        self.result = Tk.Label(self.root, text=" ")
        self.result.pack()

        self.root.mainloop()

    @staticmethod
    def fibonacci(idx):
        # Your function here
        # Make sure this function accepts as its only argument the index
        return idx ** 2

    def clicked(self):
        idx = int(self.digits.get())
        out = App.fibonacci(idx)
        self.result['text'] = out


App()

这篇关于从用户那里获取输入并在TKinter中返回答案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！