Python Tkinter框架内部框架限制或用户错误?

我一直在开发一个追踪股价的应用程序。用户应该看到一个带有入口小部件和按钮的窗口,该窗口创建了一个带有标签和按钮的新框架。标签是股票价格和符号,按钮是一个删除按钮,如果单击,应该会隐藏该框。

我已经重写了4次这个程序,这是一次很棒的学习经历,但我学到的是,我不能让“迷你框架”从主GUI类的方法部分调用——这会使删除按钮变乱,并更新后面的值 frame.pack_forget() 所以它只删除最后一个项目。

我已经将我的迷你框架小部件向下移动到类中,以获得实际的股票价值。我已经把它们打包了(我认为是正确的),但它们没有出现。它们也不会出错,这并没有多大帮助。这是我的代码,尽管我省略了很多功能部分来显示我的框架发生了什么。请记住,我需要保留它,这样我才能调用更新程序( self.update_stock_value )带有 .after 反对的方法 myapp.myContainer .

有更好的方法吗??提前谢谢,我的头很疼。

import re
import time
import urllib
from Tkinter import *
import threading
from thread import *

runningThreads = 0

# each object will be added to the gui parent frame
class MyApp(object):
    def __init__(self, parent):
        self.myParent = parent
        self.myContainer = Canvas(parent)
        self.myContainer.pack()
        self.create_widgets()

    # METHOD initiates basic GUI widgets
    def create_widgets(self):
        root.title("Stocker")
        self.widgetFrame = Frame(self.myContainer)
        self.widgetFrame.pack()

        self.input = Entry(self.widgetFrame)
        self.input.focus_set()
        self.input.pack()

        self.submitButton = Button(self.widgetFrame, command = self.onButtonClick)
        self.submitButton.configure(text = "Add new stock")
        self.submitButton.pack(fill = "x")

    # METHOD called by each stock object
    # returns the "symbol" in the entry widget
    # clears the entry widget
    def get_input_value(self):
        var = self.input.get()
        self.input.delete(0, END)
        return var

    # METHOD called when button is clicked
    # starts new thread with instance of "Stock" class
    def onButtonClick(self):
        global runningThreads # shhhhhh im sorry just let it happen
        runningThreads += 1 # count the threads open
        threading.Thread(target = self.init_stock,).start() # force a tuple
        if runningThreads == 1:
            print runningThreads, "thread alive"
        else:
            print runningThreads, "threads alive"

    def init_stock(self):
        new = Stock()

class Stock(object):
    def __init__(self):
        # variable for the stock symbol
        symb = self.stock_symbol()
        # lets make a GUI
        self.frame = Frame(myapp.myContainer)
        self.frame.pack
        # give the frame a label to update
        self.testLabel = Label(self.frame)
        self.testLabel.configure(text = self.update_stock_label(symb))
        self.testLabel.pack(side = LEFT)
        # create delete button to kill entire thread
        self.killButton = Button(self.frame, command = self.kill_thread)
        self.killButton.configure(text = "Delete")
        self.killButton.pack(side = RIGHT)
        # create stock label
        # call updater

    def kill_thread(self):
        global runningThreads
        runningThreads -= 1
        self.stockFrame.pack_forget() # hide the frame
        self.thread.exit()  # kill the thread

    def update_stock_label(self, symb):
        self.testLabel.configure(text = str(symb) + str(get_quote(symb)))
        myapp.myContainer.after(10000, self.update_stock_label(symb))

    def stock_symbol(self):
        symb = myapp.get_input_value()
        print symb




# The most important part!
def get_quote(symbol):
    try:
        # go to google
        base_url = "http://finance.google.com/finance?q="
        # read the source code
        content = urllib.urlopen(base_url + str(symbol)).read()
        # set regex target
        target = re.search('id="ref_\d*_l".*?>(.*?)<', content)
        # if found, return.
        if target:
            print "found target"
            quote = target.group(1)
            print quote
        else:
            quote = "Not Found: "
        return quote
     # handling if no network connection
     except IOError:
         print "no network detected"


root = Tk()
root.geometry("280x200")
myapp = MyApp(root)
root.mainloop()