My gui

[Arnaud Delobelle]

On 24 April 2013 18:53, Chris “Kwpolska” Warrick <kwpolska at gmail.com> wrote:
> On Wed, Apr 24, 2013 at 7:08 PM, Daniel Kersgaard
> <danielkersgaard at gmail.com> wrote:
>> Today, being the last day of lectures at school, my instructor ran briefly through Tkninter and GUIs. I'd been looking forward to this particular lesson all semester, but when I got home and copied a sample program from my textbook verbatim, IDLE does nothing. No error, no nothing. Any ideas? Here  is the code from my program. I'm not sure if this is appropriate, but suggestions are helpful.
>>
>> import tkinter
>> import tkinter.messagebox
>>
>> class MyGui:
>>     def _init_(self):
>>         self.main_window = tkinter.Tk()
>>
>>         self.top_frame = tkinter.Frame(self.main_window)
>>         self.bottom_frame = tkinter.Frame(self.main_window)
>>
>>         self.prompt_label = tkinter.Label(self.top_frame, text = 'Enter a distance in Kilometers: ')
>>         self.kilo_entry = tkinter.Entry(self.top_frame, width = 10)
>>
>>         self.prompt_label.pack(side = 'left')
>>         self.kilo_entry.pack(side = 'left')
>>
>>         self.calc_button = tkinter.Button(self.bottom_frame, text = 'Convert', command = self.convert)
>>
>>         self.quit_button = tkinter.Button(self.bottom_frame, text = 'Quit', command = self.main_window.destroy)
>>
>>         self.calc_button.pack(side = 'left')
>>         self.quit_button.pack(side = 'left')
>>
>>         self.top_frame.pack()
>>         self.bottom_frame.pack()
>>
>>         tkinter.mainloop()
>>
>>     def convert(self):
>>         kilo = float(self.kilo_entry.get())
>>
>>         miles = kilo * 0.6214
>>
>>         tkinter.messagebox.showinfo('Result', str(kilo) + ' kilometers is equal to ' + str(miles) + 'miles.')
>>
>> poop = MyGui()
>>
>> --
>> http://mail.python.org/mailman/listinfo/python-list
>
> poop?  Seriously?  You aren’t serious about that copying, right?
>
> Your code seems to be missing a lot of important stuff.  You don’t
> inherit from tkinter.Frame.  Compare your program to the sample “Hello
> world!” program:

His class is not a frame, it's just a container for the tkinter code.
It's a bit unusual but it looks correct to me (apart from the single
underscores in __init__() as spotted by Ned Batchelder).

-- 
Arnaud