Open-Source Taschenrechner für alle Betriebsysteme (Python)

taschenrechner.py

import os

while True:
    a = input("Enter the first number and press RETURN >> ")
    try:
        num1 = int(a)
    except:
        continue
    break
    
while True:
    print("\n"*100)
    b = input("Choose one of those operators and press RETURN '+ / * -' ")
    if b in "+/*-":
        break
        
while True:
    print("\n"*100)
    c = input("Enter the second number and press RETURN >> ")
    try:
        num2 = int(c)
    except:
        continue
    break
    
    
if b == "-":
    print(num1-num2)
if b == "+":
    print(num1+num2)
    
if b == "/":
	if num2 == 0:
		print("DIVISION BY ZERO! Not possible.")
	else:
		print(num1/num2)
if b == "*":
    print(num1*num2)