TKINTER NUMBER PRESS UPDATE
TKINTER NUMBER PRESS CODE

TKINTER NUMBER PRESS UPDATE

Now to update the text in the button, you use. You can get rid of the second function as you only need one, then you change the command of the button and its text to counter.

TKINTER NUMBER PRESS CODE

Now the code will be able to count, but you have set variables as Buttons, but then made them None type objects, to change this. Also you must change counter + 1 to counter += 1 so it increments the variable Next you must deifne the counter variable as a global variable, so that it will be the same in the function (do this inside the function as well). My answer basically changes what you have already into the easiest way for it to do what you want.įirstly you import libraries that you don't need/use (you may need them in your whole code, but for this question include a minimal example only). In making all these changes we cut your code in half to achieve the same results and it is a bit cleaner to read.Ok so there are a few things wrong with your code so far. Tk.Button(win, text='1', command=lambda: var.set(4)).grid(row=2, column=0) The new final code should look like this: import tkinter as tk So if we delete the def handle_button(): function and then we change the button1 command to a lambda we can save our selves 2 more lines of code that is not really helping us or improving readability. lambda is used to create anonymous function and what that means is we can create one line functions that do not require us to define a function by name. I am not sure if you have heard of lambda just yet but it can be used here to reduce our code just a little bit more. Tk.Button(win, text='1', command=handle_button).grid(row=2, column=0) Var_entry = tk.Entry(win, textvariable=var)

With all that you should have something that looks like this: import tkinter as tk Right now there is no benefit to using a function to set up the GUI so instead lets remove the extra step. Looking at def window(): we can remove this function and take its content and move it to the global name space. Like this: button1 = tk.Button(win, text='1', command=handle_button) Delete this line entirely and rewrite the button1 to contain the command.

Looking at button1.bind('', handle_button) is overkill for something the button can handle with the command argument.

Rewrite that line as button1 = tk.Button(win, text='1') Looking at button1 = tk.Button(win,text = '1' ,textvariable = 1) you are doing something here that does nothing to help. So lets rewrite that line to just var_entry = tk.Entry(win, textvariable=var). In an entry field the argument text is actually short for textvariable so what is going on here is you are assigning the string var to the text variable and then immediately reassigning the textvariable to the StringVar(). Looking at var_entry = tk.Entry(win,text='var',textvariable=var). Instead delete the return all together and just write the command used to update the StringVar. var.insert(0, 4) is not going to return a useful value for the return command to help and 2nd you cannot return a result to the binding it has no use. This return is actually not doing anything useful here because what it is trying to do is return the results of calling var.insert(0, 4) and assigning it to what ever called that function. That said there are a few things wrong with your code that are not useful here. To get the behavior you are looking for all you need to do is:

Tkinter number press