How to get my button to call a function and count from tkinter?

Question

I'm trying to call a function at every button click, the function is calling a text from a entrybox and transferring it to new label and every time I click a button the number must increase\increment by 1' the code runs until I press the button the gives me this error:

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python310\lib\tkinter\__init__.py", line 1921, in __call__
    return self.func(*args)
  File "C:\Users\NdohAdmin\PycharmProjects\gui\main.py", line 24, in button_clicked
    new += 1
TypeError: can only concatenate str (not "int") to str

This is the code:

from tkinter import *

window = Tk()
window.geometry("500x200")
window.title("My first GUI program")

# label head
Head = Label(text="WELCOME TO THE SKIPPING CHALLENGE", font=("Arial", 30, "bold"))
Head.Grid(row=0, column=1)

counter = Label(text="Enter Your target.", font=("Arial", 20, "bold",))
counter.grid()

# Entry box
msay = Entry(width=10)
msay.grid()
msay.get()


# Function to increase
def button_clicked():
    global new
    new = msay.get()
    new += 1

# Button calls a function
button = Button(text="Skip to count", command=button_clicked)
button.grid()

skipping_count = Label(text="Your Counter", font=("Arial", 20, "bold"))
skipping_count.grid()

new = Label(text="0", font=("Arial", 20, "bold"))
new.grid()

window.mainloop()

Answer 1

msay.get() gives you a string type number, You need to convert it to an integer using int()

from tkinter import *

window = Tk()
window.geometry("500x200")
window.title("My first GUI program")

# label head
Head = Label(text="WELCOME TO THE SKIPPING CHALLENGE", font=("Arial", 30, "bold"))
Head.grid(row=0, column=1)

counter = Label(text="Enter Your target.", font=("Arial", 20, "bold",))
counter.grid()

# Entry box
msay = Entry(width=10)
msay.grid()
msay.get()


# Function to increase
def button_clicked():
    global new
    new = int(msay.get())
    new += 1

# Button calls a function
button = Button(text="Skip to count", command=button_clicked)
button.grid()

skipping_count = Label(text="Your Counter", font=("Arial", 20, "bold"))
skipping_count.grid()

new = Label(text="0", font=("Arial", 20, "bold"))
new.grid()

window.mainloop()

Your question is not clear to me, But I write what I understand.

I think this could help you.

from tkinter import *

window = Tk()
window.geometry("500x200")
window.title("My first GUI program")

# label head
Head = Label(text="WELCOME TO THE SKIPPING CHALLENGE", font=("Arial", 30, "bold"))
Head.grid(row=0, column=1)

counter = Label(text="Enter Your target.", font=("Arial", 20, "bold",))
counter.grid()

# Entry box
msay = Entry(width=10)
msay.grid()
msay.get()
start = 0
v = 0

# Function to increase
def button_clicked():
    global start,v # Excess to global variable.
    if msay.get() == '': # Change the value of start to zero and insert 0 inside entry if there is no value inside the entry.
        start=0
        msay.insert(0,'0')
    elif v != int(msay.get()): # Check if value inside entry is change, Then change the value of v and start.
        v = int(msay.get())
        start = int(msay.get())

    new['text'] = start # Change the text of the label
    start+=1 # add 1 to start.
    

# Button calls a function
button = Button(text="Skip to count", command=button_clicked)
button.grid()

skipping_count = Label(text="Your Counter", font=("Arial", 20, "bold"))
skipping_count.grid()

new = Label(text="0", font=("Arial", 20, "bold"))
new.grid()

window.mainloop()