如何将 Tkinter 中的条目转换为列表以便我可以为我的程序分析它

Question

from tkinter import *
import random

root = Tk()
root.title("Random")
root.geometry("600x400")
root.resizable(False, False)


def open_saw():
    saw_wn = Tk()
    saw_wn.title("Random App - Spin a Wheel")
    saw_wn.geometry("600x400")
    saw_wn.resizable(False, False)

    saw_wn.mainloop()


def open_coin():
    c_wn = Tk()
    c_wn.title("Random App - Flip a Coin")
    c_wn.geometry("600x400")
    c_wn.resizable(False, False)

    Label(c_wn, text="                            ").grid(row=0, column=0)
    Label(c_wn, text="Flip the coin below!").grid(row=0, column=1)

    c_wn.mainloop()


def open_average():
    avg_wn = Tk()
    avg_wn.title("Random App - Flip a Coin")
    avg_wn.geometry("600x400")
    avg_wn.resizable(False, False)

    Label(avg_wn, text="                            ").grid(row=0, column=0)
    Label(avg_wn, text="Enter your values below to get the averages in mean, median, mode, and range").grid(row=0,
                                                                                                            column=1)
    entry_avg = Entry(avg_wn).grid(row=1, column=1)

    def calculate_mean():
        print(entry_avg.get().split(','))

    Button(avg_wn, text='test', command=calculate_mean).grid(row=2, column=1)


Label(root, text="                                                          ").grid(row=0, column=0)

title = Label(root, text="Welcome to Random")
title.config(font=("Yu Gothic UI", 24))
title.grid(row=0, column=1)

button1 = Button(root, text="             Spin a wheel             ", padx=80, pady=25, command=open_saw)
button1.place(x=2.25, y=100)

button2 = Button(root, text="Calculate mean, mode, median, and range", padx=20, pady=25, command=open_average)
button2.place(x=325, y=100)

button3 = Button(root, text="Flip a Coin", padx=125, pady=25, command=open_coin)
button3.place(x=2.25, y=200)

button4 = Button(root, text="Roll a die", padx=107.5, pady=25)
button4.place(x=325, y=200)

root.mainloop()

我想要的是从条目中获取一个列表，以便我可以计算均值、众数、中位数等，但是当我这样做时，我收到一个错误。错误如下：

line 44, in calculate_mean
    print(entry_avg.get().split(','))
AttributeError: 'NoneType' object has no attribute 'get'

请帮忙，因为我是编程的初学者，而且我一直坚持这一点。如果您需要更多信息，请告诉我，我会给您。

Answer 1

似乎 Entry.grid 没有 return 任何东西（即 None）。尝试将 grid 调用和 Entry 实例化放在 open_average 函数的不同行上：

entry_avg = Entry(avg_wn)
entry_avg.grid(row=1, column=1)

而不是

entry_avg = Entry(avg_wn).grid(row=1, column=1)

如何将 Tkinter 中的条目转换为列表以便我可以为我的程序分析它

How to convert entry from Tkinter into a list so that I can analyze it for my program

python

windows

math

statistics

tkinter