app.py

import streamlit as st

def add(num1,num2):
  return num1+num2

def sub(num1,num2):
  return num1-num2

def mul(num1,num2):
  return num1*num2

def div(num1,num2):
  return num1/num2

def main():
  st.title("Calculator By Amaan")
  num1 = st.number_input("ENTER A NUMBER")
  num2 = st.number_input("ENTER ANOTHER NUMBER")

  operation = st.radio("SELECT AN OPTION",("+","-","*","/"))

  if operation == "+":
    result = add(num1,num2)
  elif operation == "-":
    result = sub(num1,num2)
  elif operation == "*":
    result = mul(num1,num2)
  else:
    result = div(num1,num2)

  st.write("THE RESULT IS: ",result)

if __name__ == "__main__":
  main()