def fahr_to_celsius(temp_fahrenheit): 
  """Convert from Fahrenheit to Celsius"""
  converted_temp=(temp_fahrenheit-32)/1.8 
  return converted_temp 

def temp_classifier(temp_celsius): 
  """Create a temp_classifier that classify the temperature and return the classification number""" 
  if temp_celsius<-2:
    number=0
  elif -2<=temp_celsius<2:
    number=1
  elif 2<=temp_celsius<15:
    number=2
  else:
    number=3
  return number
 

