primecheck.py

from math import *
from tkinter import *
from tkinter import ttk
app = Tk()
app.title('Prime number Checker')


def primecheck(x):
        xa = sqrt(x)
        if (xa % 1) == 0:
                return False
        else:
                xz = xa // 1
                while xz != 1:
                        if (x % xz) == 0:
                                return False
                        xz -= 1
                else:
                        return True


def check():
        num = int(number.get())
        x = primecheck(num)
        if x:
                labelB.configure(text='True')
        else:
                labelB.configure(text='False')


labelA = ttk.Label(app, text='Enter a number: ')
labelA.grid(column=0, row=0, sticky=W)

number = StringVar()
textbox = ttk.Entry(app, width=20, textvariable=number)
textbox.grid(column=0, row=1)

btn = ttk.Button(app, text='Check', command=check)
btn.grid(column=1, row=1)

labelB = ttk.Label(app, text='')
labelB.grid(column=0, row=3)

app.mainloop()