new_contents: def add2dict(d,k):
  	if k in d:
  		d[k]+=1
  	else:
  		d[k]=1
  	return d
  def sortVal(x):
  	import operator
  	sorted_x = sorted(x.items(), key=operator.itemgetter(1),reverse=True)
  	return sorted_x
  
  #species_list=[<input goes here>]
  species_cnt={}
  
  for species in species_list:
    species_cnt=add2dict(species_cnt,species)
  
  for k in sortVal(species_cnt):
  	print k[0],"\t",k[1]
  print
  
subject: Create countUsingDict.py