Using the lambda function in 'command = ' from Tkinter.
The command lambda does not take any arguments at all; furthermore there is no evt that you can catch. A lambda can refer to variables outside it; this is called a closure. Thus your button code should be:
bouton1 = Button(main_window, text="Enter", command = lambda: get(Current_Weight, entree1))And your get should say:
def get(loot, entree): loot = float(entree.get()) print(loot)
Actually, you just need the Entry object entree1 as the lamda pass-in argument. Either statement below would work.
bouton1 = Button(main_window, text="Enter", command=lambda x = entree1: get(x))bouton1 = Button(main_window, text="Enter", command=lambda : get(entree1))with the function get defined as
def get(entree): print(float(entree.get()))