from tkinter import *
from tkinter import messagebox
root = Tk()



def ok():
    s1=s1_wert.get()
    s2=s2_wert.get()
    if s1 == "s" and s2 == "p" or s1 == "p" and s2 == "r" or s1 == "r" and s2 == "s":
        messagebox.showinfo("Gewinner",f"Spieler 1 hat gewonnen")
    else:
        messagebox.showinfo("Gewinner",f"Spieler 2 hat gewonnen")

            
            


Label(root, text="S = Schere, R = Stein, P = Papier ").pack()

s1_wert = Entry(root)
s1_wert.pack()
s2_wert = Entry(root)
s2_wert.pack()

Button(root, text="Wählen", command=ok).pack()



    
root.mainloop()