如何在不停止脚本的情况下随机弹出一些gui #python 2.7

Question

I'm relatively new to python, so please bear with me.

My question has two aspects:

• First, I'm trying to make a GUI that randomly pops different sentences to the user, every time in a new frame.

• Second, I want the user to be able to close the GUI without stopping the script, like if it was running in the background.

here is my code:

import Tkinter as tk
import random
number = random.randint(0,13)

sentence = {contains 13 sentences
    }

window = tk.Tk()

window.output = tk.Label(text = sentence[number])
window.title("I Always See You")
window.geometry("300x150")

def next():
    rand= random.randint(0, 13)
    window2 = tk.Tk()
    window2.output = tk.Label(text = sentence[rand])
    window2.output.pack(side="top", fill="x", expand=True)
    window2.title("I Always See You")
    window2.geometry("300x150")

window.output.pack(side="top", fill="x", expand=True)

choice()

window.after(1000, next)
window.mainloop()

My problem: when my second frame pops, there isn't any text showing, and if it does have something popping, it appears in the first frame.

also, how can you insert a random float in .after() ?

Thank you so much for your help!

cheers

Answer 1

You do not see the text in the second window because Tkinter cannot handle two main windows. You need to use the Toplevel class for the others. In addition, you haven't specified the parent of the label in next , so it will probably be packed inside window instead of window2 .

In addition, you need 14 sentences because randint , unlike randrange includes both end points.

To set a random time in after , just use randint because it expects an integer number of ms.

To achieve what you want I suggest you to create a main window that will be withdraw (it will run in the background). Then popup Toplevels with random sentences. You need to call again after inside the next function if you want the windows to keep poping up. To prevent the after to be cancelled if the user closes the Toplevel, I called the after method from the withdrawn main window:

import Tkinter as tk
import random
number = random.randint(0,13)

sentence = {i: str(i) for i in range(14)}

def next():
    rand=random.randint(0, 13)
    window2 = tk.Toplevel(root)
    window2.output = tk.Label(window2, text=sentence[rand])
    window2.output.pack(side="top", fill="x", expand=True)
    window2.title("I Always See You")
    window2.geometry("300x150")
    tps = random.randint(1000, 10000)
    root.after(tps, next)

root = tk.Tk()
root.withdraw() # hide root window

window = tk.Toplevel(root)

window.output = tk.Label(window, text=sentence[number])
window.title("I Always See You")
window.geometry("300x150")
window.output.pack(side="top", fill="x", expand=True)

tps = random.randint(1000, 10000)
root.after(tps, next)

root.mainloop()