def calculator(): 
  operation= input("+,*,-,/")
  number1=float(input("1 число: ")) 
  number2=float(input("2 число: "))
  if operation== '+':
   result=number1+number2 
  elif operation== '*': 
   result=number1*number2
  elif operation=='-':
   result=number1-number2
  elif operation=='/':
   result= number1/number2 
   print(f"Результат: {result}")