小编use*_*540的帖子

# Tip Calculator
from tkinter import *

class TipCalc:
    def __init__(self):
        my_window = Tk() # create a window
        my_window.title("Tip Calculator")
        my_window.geometry('400x200')

        amount = StringVar()

        # create frames labels, entry, and buttons
        frm_upper = Frame(my_window)
        frm_upper.pack()
        frm_mid = Frame(my_window)
        frm_mid.pack()
        frm_lower = Frame(my_window)
        frm_lower.pack()

        # create label and entry for amount
        amount_label = Label(frm_upper, text = "Enter Amount: ")
        my_entry = Entry(frm_upper, textvariable = amount)
        my_entry.delete(0, END)
        my_entry.insert(0, "")

        # create a label for total amount
        total_label = Label(frm_mid, text = …