Tkinter dynamic label display

Question

I'm working on simple window and like to have clock in it. Found out how to dynamically display time in separate window: enter image description here

Somehow same code placed into my project displays only label's purple background:

def time():
 string = strftime('%H:%M:%S %p')
 lbl.config(text=string)
 lbl.after(1000, time)
class MainWindow(tk.Tk):
 def __init__(self, *args, **kwargs):
 tk.Tk.__init__(self, *args, **kwargs)
 main_frame = tk.Frame(self, height=600, width=1024)
 main_frame.pack_propagate(0)
 main_frame.pack(fill="both", expand="true")
 main_frame.grid_rowconfigure(0, weight=1)
 main_frame.grid_columnconfigure(0, weight=1)
 frame1 = tk.LabelFrame(self, text="Parametry Pracy")
 frame1.place(rely=0.05, relx=0.02, height=400, width=400)
 pp=tk.Frame(frame1)
 pp.pack(pady=2)
 lbl = Label(pp, font=('arial', 20, 'bold'),bg='purple', fg='white', width=11)
 lbl.grid(row=0, column=0, sticky="W", padx=20)

enter image description here

• jasonharper: You do not appear to be calling the time() function. Even if you did, it has no access to lbl, which is a local variable that does not exist outside of MainWindow.__init__().
• adamssson: Moved def Time() under main window class + added time() and works! Thanks Mate!
• user4136999: Ignore time while using valid Python. Go by a different name.

Answer 1

Here is working code with changes:

class MainWindow(tk.Tk):
 def __init__(self, *args, **kwargs):
 tk.Tk.__init__(self, *args, **kwargs)
 main_frame = tk.Frame(self, height=600, width=1024)
 main_frame.pack_propagate(0)
 main_frame.pack(fill="both", expand="true")
 main_frame.grid_rowconfigure(0, weight=1)
 main_frame.grid_columnconfigure(0, weight=1)
 frame1 = tk.LabelFrame(self, text="Parametry Pracy")
 frame1.place(rely=0.05, relx=0.02, height=400, width=400)
 pp=tk.Frame(frame1)
 pp.pack(pady=2)
 def time():
 string = strftime('%H:%M:%S %p')
 lbl.config(text=string)
 lbl.after(1000, time)
 # Styling the label widget so that clock
 # will look more attractive
 lbl = Label(pp, font=('arial', 40, 'bold'), width=11)
 lbl.grid(row=0, column=0, sticky="W", padx=20)
 #lbl.pack(side = LEFT)
 time()

enter image description here