Why does tkinter crash when i try using the keyboard module?

Whenever i try to make the keyboard module type something when a tkinter button is clicked, it starts lagging a lot, resulting in the tkinter window getting the "application not responding" error.

What i tried to make is a program that spams anything you write in the textbox after you click the "spam" button.

Here is my python code:

# imports
import tkinter as tk
import keyboard as kb
# setup
root = tk.Tk()
root.title("Autospam by previous")
root.geometry("400x400")
root.resizable(False, False)
root.configure(bg="black")
stopspam = False
# functions
def start():
stopspam = False
while True:
kb.write(entry1.get(), 0.1)  # 0.1 delay prevents massive lag
if stopspam is True:
break
def stop():
stopspam = True
# design
label1 = tk.Label(root, text="Autospam", font=("Verdana", 30, "bold"), bg="black", fg="white")
label1.place(relx=0.2, rely=0)
label2 = tk.Label(root, text="Made by previous", font=("Verdana", 15, "italic"), bg="black", fg="white")
label2.place(relx=0.25, rely=0.15)
label3 = tk.Label(root, text="text:", font=("Verdana", 15), bg="black", fg="white")
label3.place(relx=0.41, rely=0.3)
entry1 = tk.Entry(root, font=("Verdana", 15, "bold"))
entry1.place(relx=0.125, rely=0.4)
label4 = tk.Label(root, text="tip: don't use large chunks of text.", font=("Verdana", 15), bg="black", fg="white")
label4.place(relx=0.05, rely=0.5)
button1 = tk.Button(root, text="Spam", font=("Verdana", 15, "bold"), command=start)
button1.place(relx=0.125, rely=0.8)
button2 = tk.Button(root, text="Stop", font=("Verdana", 15, "bold"), command=stop)
button2.place(relx=0.525, rely=0.8)
# mainloop
root.mainloop()

If there are any other mistakes or errors i've missed, feel free to say them!

Any help will be appreciated.

Your program is single-threaded, so the while True loop in start() causes the root.mainloop() to not run, thus the window does not respond. To fix this, we'll use a recursive function defined with tkinter's built-in function .after().

# functions
def start():
global stopspam
stopspam = False
toWrite = entry1.get()
loop(toWrite)
def loop(text):
if not stopspam:
kb.write(text, 0.1)
root.after(10, loop, text) #run again after 10 milliseconds
def stop():
global stopspam
stopspam = True

The global declarations are required because you are modifying a variable inside of a method. Notice how it's not necessary inside of the loop method.

Your program was also going to be very slow because you were running entry1.get() in every kb.write instance. So it would exponentially get slower and slower, since the keyboard.write() is slow once strings get large. I modified the code to only write your initial string, which is probably what you were intending in the first place.

Hope this helps!