使用 combobox 在 tkinter gui 中生成入口小部件，然后获取输入的值以供稍后在脚本中使用

问：

我有一个python脚本，它使用tkinter gui来生成用于用户值插入的输入框。生成的输入框数是从组合框（1 或 2）中选择的，该组合框允许用户输入适当数量的项目的数据。然后，这些值应填充字典，以便以后可以调用它们以用作变量。我能够生成框，但是当我输入数据并提交时，值似乎没有填充字典。

我试过这个：

import os
import re
import tkinter as tk
from tkinter import ttk

root = tk.Tk()
root.title('Rack Position & Injection Volume')
root.geometry("700x200")

numbers = [1, 2]
combo = ttk.Combobox(root, values=numbers)
combo.grid(row=0, column=1)
combo.set(numbers[0])
combo_label = tk.Label(root, text="Select number of plates for this sequence:").grid(column=0, row=0)
combo['state'] = 'normal'
global selected_number
slected_number= int(combo.get())


def generate_entry_boxes():
    global selected_number, entry1_boxes, entry2_boxes, entry1_labels, entry1_values, entry2_values, entry2_labels, buttons
    entry1_boxes = []
    entry1_values = {}
    entry2_boxes = []
    entry2_values = {}
    entry_labels = []
    entry2_labels = []
    buttons = []
    for entry in entry1_boxes:
        entry.destroy()
        entry1_boxes.clear()
    for entry2 in entry2_boxes:
        entry2.destroy()
        entry2_boxes.clear()
    for label in entry_labels:
        label.destroy()
        entry_labels.clear()
    for label2 in entry2_labels:
        label2.destroy()
        entry2_labels.clear()
    for button in buttons:
        button.destroy()
        buttons.clear()

    for i in range(slected_number):
        entry1_values[i] = tk.StringVar()
        entry1 = ttk.Entry(root, textvariable=entry1_values[i])
        entry1.grid(row=i+1, column=1)
        entry1_boxes.append(entry1)
        entry2_values[i] = tk.StringVar()
        entry2 = ttk.Entry(root, textvariable=entry2_values[i])
        entry2.grid(row=i+1, column=3)
        entry2_boxes.append(entry2)
        label = ttk.Label(root, text="Position of plate " + str(i+1) + ":")
        label.grid(row=i+1, column=0)
        entry_labels.append(label)
        label2 = ttk.Label(root, text="Injection Volume(uL):")
        label2.grid(row=i+1, column=2)
        entry2_labels.append(label2)
        button = tk.Button(root, text="Submit", command=get_entries)
        button.grid(row=selected_number + 1, column=1)
        buttons.append(button)


def get_entries():
    for i, entry in enumerate(entry1_boxes):
        entry1_values[i] = entry.get()
    for i, entry in enumerate(entry2_boxes):
        entry2_values[i] = entry.get()
    entry_plate1 = entry1_values.get('0', 'Key not found')
    entry_plate2 = entry1_values.get('1', 'Key not found')
    entry_vol1 = entry2_values.get('0', 'Key not found')
    entry_vol2 = entry2_values.get('1', 'Key not found')
    condition_mask = df['Vial Position'] == 1
    second_occurrence_index = df[condition_mask].index[1]
    after_mask = df.index >= second_occurrence_index
    df.loc[~after_mask, 'Rack Position'] = entry_plate1
    df.loc[after_mask, 'Rack Position'] = entry_plate2
    df['Plate Position'] = df['Rack Position']
    df.loc[~after_mask, 'Injection Volume'] = entry_vol1
    df.loc[after_mask, 'Injection Volume'] = entry_vol2


combo.bind("<<ComboboxSelected>>", lambda event: generate_entry_boxes())
root.mainloop()

并期望从生成的输入框中获取 entry_plate1、entry_plate2、entry_vol1 和 entry_vol2 的值，但我的数据显示“找不到密钥”