Python tkinter组合框，如何选择字典键并打印相应的值？

python和tkinter非常新。我想创建多个组合框，从单个字典中独立选择，然后在单击“提交”按钮后打印相应的值。在没有错误和挫折的情况下，我所能做的就是打印所选的键

简单地说，我想在第一个组合框中选择A4，在第二个组合框中选择A7，单击Submit，在python shell中生成以下结果：

8.3 x 11.7

2.9 x 4.1

而不是这个结果：

A4

A7

如有任何建议，将不胜感激

import tkinter as tk
from tkinter import ttk

# Create instance
win = tk.Tk()

# Dictionary for combobox selection
Paper_sizes = {"":"", "A9":"1.5 x 2.0", "A8":"2.0 x 2.9",
               "A7":"2.9 x 4.1", "A6":"4.1 x 5.8", "A5":"5.8 x 8.3",
               "A4":"8.3 x 11.7", "A3":"11.7 x 16.5", "A2":"16.5 x 23.4",
               "A1":"23.4 x 33.1", "A0":"33.1 x 46.8"}
# Combobox 1
ttk.Label(win, text="Choose a paper size").grid(column=1, row=0)
paper1 = tk.StringVar()
paper1_chosen = ttk.Combobox(win, width=12, textvariable=paper1, state='readonly')
paper1_chosen['values']  = sorted(list(Paper_sizes.keys()))
paper1_chosen.grid(column=1, row=1)     
paper1_chosen.current(0)

# Combobox 2
ttk.Label(win, text="Choose a 2nd paper size").grid(column=1, row=2)
paper2 = tk.StringVar()
paper2_chosen = ttk.Combobox(win, width=12, textvariable=paper2, state='readonly')
paper2_chosen['values']  = sorted(list(Paper_sizes.keys()))
paper2_chosen.grid(column=1, row=3)     
paper2_chosen.current(0)

# Button Click Event Function
def submit_button():
    print(paper1_chosen.get())
    print(paper2_chosen.get())
    
# Adding a Button
action = ttk.Button(win, text = "Submit", command = submit_button)
action.grid(column=2, row=4)  

# Start GUI
win.mainloop()

---

将您的功能更改为此是否有帮助

def submit_button():
    key1 = paper1_chosen.get()
    key2 = paper2_chosen.get()
    print(Paper_sizes[key1])
    print(Paper_sizes[key2])

内部没有发生什么，只是从组合框选择中取出密钥并打印出相应的值对

希望您能理解，如果您有更多疑问，请告诉我

干杯