如何使用 Python tkinter 在另一个框架的文本框中显示过程输出

Question

我正在尝试将 'ping' 输出写入一个文本框在 'output' tkinter 框架中创建当我在将输出写入文件时按下 'Submit' 按钮。

问题：

1: 有没有办法将文本框放在 'output' 框架内？
2: 如何从 'output' 框架内的文件打印行？
3: 如何使用线程或多进程实时显示输出？

点击前'Submit':

import tkinter as tk
import subprocess as sub
from multiprocessing import Queue
import os

class GUI(tk.Tk):

    def __init__(self, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)
        self.geometry("650x500")
        self.title("Gil Shwartz GUI Project")
        menu = tk.Frame(self, height=250, width=10, relief="solid")
        menu.pack(side=tk.LEFT, fill="both", anchor="w")
        container = tk.Frame(self, relief="flat")
        container.pack(side=tk.TOP, fill="y", expand=True)
        output = tk.LabelFrame(self, text="Output", height=350, width=70)
        output.pack(side=tk.BOTTOM, fill="both", expand=True)

        menu.grid_columnconfigure(0, weight=1)
        menu.grid_rowconfigure(0, weight=1)

        self.frames = ["Menu", "MainWelcome", "testPing", "PageOne", "PageTwo"]

        self.frames[0] = Menu(parent=menu, controller=self)
        self.frames[1] = MainWelcome(parent=container, controller=self)
        self.frames[2] = testPing(parent=container, controller=self)
        self.frames[3] = PageOne(parent=container, controller=self)
        self.frames[4] = PageTwo(parent=container, controller=self)

        self.frames[0].grid(row=0, column=0, sticky="nsew")
        self.frames[1].grid(row=0, column=0, sticky="nsew")
        self.frames[2].grid(row=0, column=0, sticky="nsew")
        self.frames[3].grid(row=0, column=0, sticky="nsew")
        self.frames[4].grid(row=0, column=0, sticky="nsew")

        self.show_frame(1)


    def show_frame(self, page_name):
        frame = self.frames[page_name]
        print(frame)
        frame.tkraise()
        frame.grid(row=0, column=0, sticky="nsew")

class Menu(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller

        button1 = tk.Button(self, text="Ping Test",
                            command=lambda: controller.show_frame(2))
        button1.config(bg="royalblue2")
        button2 = tk.Button(self, text="Page Two",
                            command=lambda: controller.show_frame(4))
        button2.config(bg="dark violet")
        button3 = tk.Button(self, text="Quit",
                            command=lambda: Menu.terminate(self))
        button3.config(bg="gray40")

        button1.pack(fill="both", expand=True)
        button2.pack(fill="both", expand=True)
        button3.pack(fill="both", expand=True)
        button1.grid_columnconfigure(0, weight=1)
        button2.grid_columnconfigure(0, weight=0)
        button3.grid_rowconfigure(0, weight=0)

    def terminate(self):
        exit()

class MainWelcome(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller

        label = tk.Label(self, text="Text 1", bg="yellow")
        label.pack(fill="x", expand=True)
        label = tk.Label(self, text="Text 2", bg="yellow")
        label.pack(fill="x")

class testPing(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller

        urlLabel = tk.Label(self, text="Enter URL : ", padx=5, pady=5)
        urlLabel.pack(anchor="w")
        urlInputBox = tk.Entry(self)
        urlInputBox.pack(anchor="w")
        urlInputBox.grid_columnconfigure(0, weight=0)

        clearFileLabel = tk.Label(self, text="Clear File?", padx=5, pady=5)
        clearFileLabel.pack(anchor="w")

        clearFile = tk.BooleanVar()
        clearFile.set(False)
        clearFileRadioYes = tk.Radiobutton(self, text="yes", value=True, var=clearFile,
                                           command=lambda: self.callback(clearFile.get()))
        clearFileRadioYes.pack(anchor="w")
        clearFileRadioNo = tk.Radiobutton(self, text="no", value=False, var=clearFile,
                                          command=lambda: self.callback(clearFile.get()))
        clearFileRadioNo.pack(anchor="w")

        urlSubmitButton = tk.Button(self, text="Submit",
                                    command=lambda: self.pingURL(urlInputBox.get(),
                                                                 clearFile.get()))
        urlSubmitButton.pack(side=tk.RIGHT, anchor="e")

    def callback(self, clearFile):
        print(clearFile) # Debugging Mode - check Radio box Var.

    def pingURL(self, host, clearFile):

        global r

        file = fr'c:/users/{os.getlogin()}/Desktop/ping.txt'
        text = tk.Text(self, height=5, width=100, wrap=tk.WORD)
        text.pack(side=tk.TOP, expand=True)
        if clearFile == True:

            with open(file, 'a') as output:
                output.truncate(0)
                sub.call(['ping', f'{host}'], stdout=output)

        else:

            with open(file, 'a') as output:
                sub.call(['ping', f'{host}'], stdout=output)

        output.close()

class PageOne(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller
        label = tk.Label(self, text="This is page 1", bg="red")
        label.pack(side="top", fill="x", pady=10)
        button = tk.Button(self, text="Go to page 2",
                           command=lambda: controller.show_frame(2))
        button.pack()

class PageTwo(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller
        label = tk.Label(self, text="This is page 2", bg="blue")
        label.pack(side="top", fill="x", pady=10)
        button = tk.Button(self, text="Go to the start page",
                           command=lambda: controller.show_frame(1))
        button.pack()


if __name__ == "__main__":
    app = GUI()
    app.mainloop()

点击后'Submit':

Answer 1

首先，您必须使输出帧可用，否则您以后无法访问它：

self.output = tk.LabelFrame(self, text="Output", height=350, width=70)
self.output.pack(side=tk.BOTTOM, fill="both", expand=True)

然后，在 testPing() class pingURL() 方法中，您可以将 Text() 小部件打包到输出标签框中：

text = tk.Text(self.controller.output, height=5, width=100, wrap=tk.WORD)

我不知道使用线程或多进程。总的来说，我认为如果您 post 对每个问题提出问题而不是将它们列在同一个问题中，您会得到更好的答复。

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