從一個列表框移動到另一個tkinter

Question

我一直在試圖使兩個列表框小部件來選擇，添加和刪除項目從一個到另一個。

像這樣：http://www.contextures.com/images/listboxmoveuserform01.png

到目前爲止，它工作正常，但我想它不添加它們已經存在於其他列表框列表項。

到目前爲止我的代碼，對於按鈕命令：

List1 List2 List1 List2 
1  1  1  1 
2  2  2  2 
3  3  3  3 
4     4  1 
5     5  2 
          3 

我希望它不會重複：

def all_to_right(self): 
    self.Scrolledlistbox2.delete(0,END) 
    for item in self.updatescrolledlistbox(): 
     self.Scrolledlistbox2.insert(END,item) 

def all_to_left(self): 
    self.Scrolledlistbox2.delete(0,END) 

def one_to_right(self): 
    index=self.Scrolledlistbox1.curselection() 
    for x in index: 
     d=self.Scrolledlistbox1.get(x) 
     self.Scrolledlistbox2.insert(END,d) 

def one_to_left(self): 
    index=self.Scrolledlistbox2.curselection() 
    print(index) 
    for x in index: 
     self.Scrolledlistbox2.delete(x,END) 

目前1,2,3時，選擇並點擊按鈕兩次，它同樣的元素，如果它已經存在於另一個列表框中。

Answer 1

您可以使用list對象的參數和listvariable參數！ 這裏的主要邏輯 - 抓取和連接列表並通過StringVar填充列表框。

try: 
    import tkinter as tk 
except ImportError: 
    import Tkinter as tk 


class App(tk.Tk): 
    def __init__(self, *args, **kwargs): 
     tk.Tk.__init__(self, *args, **kwargs) 
     self.resizable(width=False, height=False) 

     # list variables 
     self.list_var1 = tk.StringVar() 
     self.list_var2 = tk.StringVar() 

     # main frame 
     self.main_frame = tk.Frame(self) 

     self.listbox1 = tk.Listbox(self.main_frame, listvariable=self.list_var1, selectmode='multiple') 
     self.listbox2 = tk.Listbox(self.main_frame, listvariable=self.list_var2, selectmode='multiple') 

     # little button frame 
     self.button_frame = tk.Frame(self.main_frame) 

     self.all_to_right_button = tk.Button(self.button_frame, text='>>', command=self.move_to_right) 
     self.one_to_right_button = tk.Button(self.button_frame, text='>', command=lambda: self.move_to_right(True)) 
     self.one_to_left_button = tk.Button(self.button_frame, text='<', command=lambda: self.move_to_left(True)) 
     self.all_to_left_button = tk.Button(self.button_frame, text='<<', command=self.move_to_left) 

     # packing 
     self.all_to_right_button.pack() 
     self.one_to_right_button.pack() 
     self.one_to_left_button.pack() 
     self.all_to_left_button.pack() 

     self.listbox1.pack(side='left', anchor='w') 
     self.button_frame.pack(side='left') 
     self.listbox2.pack(side='right', anchor='e') 
     self.main_frame.pack() 

     # insert default values 
     self.init_default_values() 

    def init_default_values(self): 
     self.list_var1.set(value=[1, 2, 3, 4, 5]) 
     self.list_var2.set(value=[1, 2, 3]) 

     # you can test with literals 
     # self.list_var1.set(value=['A', 'B', 'C', 'D', 'E']) 
     # self.list_var2.set(value=['A', 'B', 'C']) 

    def move_to_right(self, only_one_item=False): 

     if self.listbox1.curselection() ==(): 
      return 

     # get tuple of selected indices 
     if only_one_item: 
      selection = (self.listbox1.curselection()[0],) 
     else: 
      selection = self.listbox1.curselection() 

     # left all/selected values 
     left_value_list = [line.strip(' \'') for line in self.list_var1.get()[1:-1].split(',')] 
     left_selected_list = [left_value_list[index] for index in selection] 

     # values from right side 
     right_value_list = [line.strip(' \'') for line in self.list_var2.get()[1:-1].split(',')] 

     # merge w/o duplicates 
     result_list = sorted(list(set(right_value_list + left_selected_list))) 

     self.list_var2.set(value=result_list) 

    def move_to_left(self, only_one_item=False): 

     if self.listbox2.curselection() ==(): 
      return 

     # get tuple of selected indices 
     if only_one_item: 
      selection = (self.listbox2.curselection()[0],) 
     else: 
      selection = self.listbox2.curselection() 

     # right all/selected values 
     right_value_list = [line.strip(' \'') for line in self.list_var2.get()[1:-1].split(',')] 
     right_selected_list = [right_value_list[index] for index in selection] 

     # values from left side 
     left_value_list = [line.strip(' \'') for line in self.list_var1.get()[1:-1].split(',')] 

     # merge w/o duplicates 
     result_list = sorted(list(set(left_value_list + right_selected_list))) 

     self.list_var1.set(value=result_list) 

app = App() 
app.mainloop() 

鏈接：

• effbot ListBox page
• NMT ListBox page