Python tkinter 按钮命令

Question

I want to make an app that if you press a button it will print a letter in a textbox. I created the button:

Button(window, text="Button1", width=5,command = button1).grid(row = 3,column = 0)

And the textbox:

output = Text(window, width = 75, height=6, wrap=WORD, bg = "white")
output.grid(row = 13, column = 0)

Now I don't know what code to put in button command:

def button1():
    #idk what code to put
    #here, that will print
    #the letter 'A' in output
    #textbox

I'm new to tkinter so please help me with a piece of code that will print the letter "a" in output textbox. Thanks. No need of a huge explanation, jist a brief one to understand how it works.

Answer 1

A minimalist example to get you started:

from tkinter import *  # for example purposes only!

def pressed():
    text.insert(END, 'Thank you!')

window = Tk()

Button(window, text="Press Me!", command=pressed).pack()

text = Text(window)
text.pack()

window.mainloop()

Now follow available tutorials to build upon this.