tax

from tkinter import *
from tkinter import simpledialog, messagebox

SINGLE1 = 6000
SINGLE2 = 27950
SINGLE3 = 67700
SINGLE4 = 141250
SINGLE5 = 307050
TAXRATE1 = 0.10
TAXRATE2 = 0.15
TAXRATE3 = 0.27
TAXRATE4 = 0.30
TAXRATE5 = 0.35
TAXRATE6 = 0.386
root = Tk()
root.withdraw()

filingStatus = simpledialog.askstring('Input', 'Enter your filling status (Single(S)/Married(M): ')
taxableIncome = simpledialog.askfloat('Input', 'Enter your taxable income: ')

if filingStatus == 'S':
    if taxableIncome <= SINGLE1:
     tax = SINGLE1 * TAXRATE1
    elif taxableIncome <= SINGLE2:
    tax = SINGLE1 * TAXRATE1 + (SINGLE2 - SINGLE1) * TAXRATE2