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POPython Tkinter frame inside frame limitation or user error?
 

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  1. POPython Tkinter frame inside frame limitation or user error?
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    <p>I've been building an app to track stock prices. The user should see a window with an entry widget and a button that creates a new frame with a label and a button. The label is the stock price and symbol, the button is a delete button, and should hide that frame if clicked.</p> <p>I've re-written this program 4 times now, and it's been a great learning experience, but what I've learned is that I can't have the "mini-frames" being called from methods part of the main GUI class - this funks up the delete buttons, and updates the value behind <code>frame.pack_forget()</code> so it only deletes the last item ever. </p> <p>I've moved my mini-frame widgets down into the class for the actual stock values. I've packed them (what I assume to be correct) but they don't show up. They also don't error out, which isn't very helpful. Here's my code, although I've omitted a lot of the functional parts to show what is happening with my frames. Keep in mind I need to keep it so that I can call my updater (<code>self.update_stock_value</code>) with a <code>.after</code> method against <code>myapp.myContainer</code>.</p> <p>Is there a better way to do this?? Thanks in advance, my head hurts.</p> <pre><code>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".*?&gt;(.*?)&lt;', 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() </code></pre>
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    1. USford
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    1. COThis code is incomplete -- there's no call to mainloop and you never create an instance of MyApp. When I fix that, I get more errors. When I fix those I get more. Can you give us a complete, working program?
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      1. USBryan Oakley
    2. COI've edited with the full code I'm working with right now. Keep in mind I scrapped my working app and rebuilding it I ran into this issue, so functionality may not be there.
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