python - Obtain the value of a dictionary after select on of the combobox value -

i have created dictionary combobox's value. trying use .get(keys) obtain value set combobox. example if select a, should print out haha what, b should print out lala sorry, both of them values in dictionary how can correct code?

from tkinter import * tkinter import ttk class application:      def __init__(self, parent):         self.parent = parent         self.value_of_combo='a'         self.combo()      def textarea(self, e):         self.value_of_combo = self.box.get()         # content of text widget         r=self.thistextarea.get('1.0','1.end')         # if empty insert selected value directly         if not r:            self.thistextarea.insert(insert, self.box_values)         # if not empty delete existing text , insert selected value         else:         self.thistextarea.delete('1.0','1.end')         self.thistextarea.insert(end, self.box_values)       def combo(self):         self.box_value = stringvar()         mydict={'a':'haha what','b':'lala sorry','c':'ohoh omg'}         self.box_values=mydict.keys()         self.box = ttk.combobox(self.parent, textvariable=self.box_value,values= mydict,state='readonly')         self.box.bind('<<comboboxselected>>',self.textarea)         self.box.current(0)         self.box.grid(column=0, row=0)         self.thistextarea=text(self.parent,height=50,width=50)         self.thistextarea.grid(column=0,row=1)  root = tk() app = application(root) root.mainloop() 

to display keys (a, b , c) in combobox widget, need change self.box_values=mydict.keys() self.box_values=list(self.mydict.keys()) , line:

self.box = ttk.combobox(self.parent, textvariable=self.box_value,values= mydict,state='readonly') 

to (passing list of keys values option instead of dictionary mydict itself):

self.box = ttk.combobox(self.parent, textvariable=self.box_value,values= self.box_values,state='readonly') 

once done, in textarea() need use get() method retrieve value of correspondent chosen key select combobo wiget.

program:

here implementation of scenario above:

from tkinter import * tkinter import ttk class application:      def __init__(self, parent):         self.parent = parent         self.value_of_combo='a'         self.combo()      def textarea(self, e):         self.value_of_combo = self.box.get()         # content of text widget         #print(self.mydict.get(self.value_of_combo))         r=self.thistextarea.get('1.0','1.end')         # if empty insert selected value directly         if not r:            self.thistextarea.insert(insert, self.mydict.get(self.value_of_combo))         # if not empty delete existing text , insert selected value         else:            self.thistextarea.delete('1.0','1.end')            self.thistextarea.insert(end, self.mydict.get(self.value_of_combo))       def combo(self):         self.box_value = stringvar()         self.mydict={'a':'haha what','b':'lala sorry','c':'ohoh omg'}         self.box_values=list(self.mydict.keys())         #print(self.box_values)         self.box = ttk.combobox(self.parent, textvariable=self.box_value,values= self.box_values,state='readonly')         self.box.bind('<<comboboxselected>>',self.textarea)         self.box.current(0)         self.box.grid(column=0, row=0)         self.thistextarea=text(self.parent,height=50,width=50)         self.thistextarea.grid(column=0,row=1)  root = tk() app = application(root) root.mainloop()