I have a function that creates a list, and another that's supposed to populate a tkinter listbox with the items from that list. When a radio button is clicked the contents of the listbox should update.
The function to create the list -- get_available_decks() -- works as expected on the command line. But the listbox is not populating from that list.
When I replace the call to get_available_decks with a test list such as ['1', '2', '3'], the listbox populates as expected.
Why isn't the listbox populating from the call to get_available_decks?
def get_available_decks(master_deck_list, deck_type_selection):
# Assign the list of deck names to deck_list
decks_list = []
for av_deck in master_deck_list:
if deck_type_selection == 'official':
if av_deck['official'] == True:
decks_list.append(av_deck['name'])
elif deck_type_selection == 'community':
if av_deck['official'] == False:
decks_list.append(av_deck['name'])
elif deck_type_selection == 'all':
decks_list.append(av_deck['name'])
# for i in decks_list:
# print(i)
return decks_list
def update_decklist():
av_box.delete(0, tk.END)
decklist = get_available_decks(master_deck_list, deck_type_selection)
for item in decklist:
# item = tk.StringVar(item)
av_box.insert(tk.END, item)
# Deck type radio buttons
radio_1 = tk.Radiobutton(decktypes_frame, text="Official", variable=deck_type_selection, value="official", command=lambda: update_decklist())
radio_1.grid(column=0, row=0, padx=5, pady=5)
radio_2 = tk.Radiobutton(decktypes_frame, text="Community", variable=deck_type_selection, value="community", command=lambda: update_decklist())
radio_2.grid(column=1, row=0, padx=5, pady=5)
radio_3 = tk.Radiobutton(decktypes_frame, text="All", variable=deck_type_selection, value="all", command=lambda: update_decklist())
radio_1.grid(column=0, row=0, padx=5, pady=5)
radio_3.grid(column=2, row=0, padx=5, pady=5)
# decksframe holds the available and selected decks lists
decksframe = tk.LabelFrame(main, text="Available Decks")
decksframe.columnconfigure(0, weight=3)
decksframe.columnconfigure(1, weight=3)
# Available Decks
av_box = tk.Listbox(decksframe, selectmode="multiple", exportselection=0)
av_box.grid(column=0, row=0, padx=5, pady=5)
Note that deck_type_selection passed to get_available_decks() is an instance of tkinter StringVar, so checking it with a string inside get_available_decks() will most likely be evaluated as False and nothing will be appended into decks_list. You should pass the value in that variable instead:
def update_decklist():
av_box.delete(0, tk.END)
# use .get() to get the value of deck_type_selection
decklist = get_available_decks(master_deck_list, deck_type_selection.get())
for item in decklist:
av_box.insert(tk.END, item)