... Previous Changeset . ... def buttons_pack(self, frame): €а . ... load_1 = tk.Button(frame, text="Load", command= self.load(1)) €а . ... load_1 = tk.Button(frame, text="Load", command= lambda: self.load(1)) €а . ... run_b = tk.Button(frame, text="Run", command= self.run()) €а . ... run_b = tk.Button(frame, text="Run", command= lambda: self.run()) €а . ... step_b = tk.Button(frame, text="Step", command= self.step()) €а . ... step_b = tk.Button(frame, text="Step", command= lambda: self.step()) €а . ...