我有一个创建列表的函数,另一个函数应该用该列表中的项目填充 tkinter 列表框。单击单选按钮时,列表框的内容应更新。
创建列表的函数 get_available_decks() 在命令行上按预期工作。但列表框并未从该列表中填充。
当我用 ['1', '2', '3'] 等测试列表替换对 get_available_decks 的调用时,列表框将按预期填充。
为什么列表框没有通过调用 get_available_decks 填充?
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)
请注意,传递给
deck_type_selection
的 get_available_decks()
是 tkinter StringVar
的实例,因此使用 get_available_decks()
内部的字符串检查它很可能会被评估为 False
,并且不会将任何内容附加到 decks_list
中。您应该改为传递该变量中的值:
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)