input: Write a function to convert Celsius temperature to Fahrenheit. If the input is an empty list, return None. Otherwise, return the converted Fahrenheit temperature rounded to 2 decimal places.
  def celsiusToFahrenheit(temp):
      if not temp:
          return None
      return round((temp * 9/5) + 32, 2)
  
  assert celsiusToFahrenheit(0) == 32.0
  assert celsiusToFahrenheit(100) == 212.0
  assert celsiusToFahrenheit(-40) == -40.0
  assert celsiusToFahrenheit([]) == None
output: def celsiusToFahrenheit(temp):
      if not temp:
          return None
      return round((temp * 9/5) + 32, 2)