tkinter entry

#!/usr/bin/env python3
# coding: utf-8
import tkinter


class App(tkinter.Frame):
    def __init__(self, master=None):
        super().__init__(master)
        self.master = master
        self.pack()
        self.create()

    def create(self):
        a = [[1, 2, 3], ['円', '個', '数']]
        self.s = []
        self.entry = []
        for i, (n, N) in enumerate(zip(*a)):
            tkinter.Label(self, text=f"{n} {N}").grid(column=0, row=i)
            self.s.append(tkinter.StringVar())
            self.entry.append(
                tkinter.Entry(self, textvariable=self.s[-1]).grid(
                    column=1, row=i))
        self.button = tkinter.Button(
            self, text='join entry', command=self.join_entry)
        self.button.grid(column=0, columnspan=2, row=3)
        self.label = tkinter.Label(self)
        self.label.grid(column=0, columnspan=2, row=4)

    def join_entry(self):
        self.label['text'] = '|'.join([ss.get() for ss in self.s])


App(master=tkinter.Tk()).mainloop()