import tkinter as  tk

window = tk.Tk()
window.title('text')
window.geometry('600x600')
e = tk.Entry(window,show='*')#密文显示
e = tk.Entry(window,show=None)#密文显示
e.pack()

def insert_point():
    '''添加到光标位置'''
    var = e.get()
    t.insert('insert',var)
def insert_end():
    '''添加到末尾'''
    var = e.get()
    t.insert('end',var)

def insert_d():
    '''添加到指定位置'''
    var = e.get()
    t.insert(2.0,var)
b1 = tk.Button(window,text='insert point',command=insert_point,width=10,height=2)
b1.pack()

b2 = tk.Button(window,text='insert end',command=insert_end,width=10,height=2)
b2.pack()
b3 = tk.Button(window,text='insert d',command=insert_d,width=10,height=2)
b3.pack()
t = tk.Text(window,height=2)  #添加文本框
t.pack()

window.mainloop()