new_contents: def k_to_c(temp):
  	return temp - 273.15
  
  def f_to_k(temp):
  	return ((temp - 32) * (5 / 9)) + 273.15
  
  def f_to_c(temp):
  	temp_k = f_to_k(temp)
  	result = k_to_c(temp_k)
  	return result
  
subject: Add a test python function