Python 3.x tkinter组合框同步['variables']

Question

I am trying to have multiple (two for this example) ttk.Comboboxes with unique variables. The boxes are syncing my selection rather than allowing me to select individual variables.

I am using a main file and an import to store the variable:

list.py (the variables)

class object():
    def __init__(self, name):
        self.name = name
        self.list = ['a','b','c']

main.py (the program):

from tkinter import *
from tkinter import ttk

import list

root = Tk()

aList = list.object('aName')
bList = list.object('bName')

aVariable = aList.list
aCombobox = ttk.Combobox(root, textvariable=aVariable)
aCombobox['values'] = aList.list
aCombobox.grid()

bVariable = bList.list
bCombobox = ttk.Combobox(root, textvariable=bList.list)
bCombobox['values'] = bList.list
bCombobox.grid()

root.mainloop()

importing the variables (as a module/class) and initializing each (aList and bList) I figure would create two separate objects. Each Combobox has its own textvariable and generates its ['valuse'] from the created objects. However, this does not work - they keep syncing.

I was able to get it to work in an interactive session as well as a CLI application:

list.py (same import as above)

main.py (as a console - no tkinter)

import list

a = list.object('list')
b = list.object('list')

print(a.list, b.list)

b.list.pop()

print(a.list, b.list)

input()

I've also tried copy.copy() and copy.deepcopy() but neither work!

Answer 1

You cannot use ordinary variables as the value of the textvariable attribute. You'll need to use a tkinter variable -- typically an instance of StringVar . For more information see http://effbot.org/tkinterbook/variable.htm