Reputation: 33
I'm developing a program in python 2.7 and have run into an issue on Pycharm. In the program, I want the user to be able to navigate through different screens by either clicking buttons, or by pressing the "enter" key. I tried implementing it into my program, and it works but Pycharm is giving the error
import Tkinter as Tk
class MemoryGameApp(Tk.Tk):
def __init__(self, *args, **kwargs):
Tk.Tk.__init__(self, *args, **kwargs)
Tk.Tk.wm_title(self, "2 screens")
container = Tk.Frame(self)
container.pack(side="top", fill="both", expand=True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames = {}
for F in (StartPage, PageTwo):
frame = F(container, self)
self.frames[F] = frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(StartPage)
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
class StartPage(Tk.Frame):
def __init__(self, parent, controller):
Tk.Frame.__init__(self, parent)
label = Tk.Label(self, text="Page 1")
label.pack()
global button
button = Tk.Button(self, text="Next", width=5, command=lambda: controller.show_frame(PageTwo))
button.pack(pady=100, padx=100)
button.focus_set()
def press_enter(event):
controller.show_frame(PageTwo)
button2.focus_set()
button.bind("<Return>", press_enter)
class PageTwo(Tk.Frame):
def __init__(self, parent, controller):
Tk.Frame.__init__(self, parent)
label_title2 = Tk.Label(self, text="Page 2")
label_title2.pack()
global button2
button2 = Tk.Button(self, text="Back", width=5, command=lambda: controller.show_frame(StartPage))
button2.pack(pady=100, padx=100)
def press_enter(event):
controller.show_frame(StartPage)
button.focus_set()
button2.bind("<Return>", press_enter)
app = MemoryGameApp()
app.mainloop()
It has given the error in def press_enter(event):
It claims that event is not used, but if I remove it from the program, the program does not function correctly
I know that it works when it is implemented, I'm just interested in seeing if there's anyway that I can remove this issue.
Thanks
Upvotes: 2
Views: 5833
Reputation: 101
To remove this warning, you could replace the argument 'event' by '_', or just do something with the object, like printing it to console.
Even though the argument of the function seems useless, it cannot be removed: It belongs to the signature of a valid event function.
Upvotes: 10