pythonは、与えられた反復可能なセット統計に対して周波数を発生させ、並べ替えする方法です。

def get_counts(sequence):
 counts = {}
 for x in sequence:
  if x in counts:
   counts[x] += 1
  else:
   counts[x] = 1
 return counts

from collections import defaultdict

def get_counts2(sequence):
 counts = defaultdict(int) #           0
 for x in sequence:
  counts[x] +=1 
 return counts

from collections import Counter

counts = Counter(sequence)
#     counts.most_common(10)            

def top_count(count_dic, n=10): #      n=10  
 value_key_pairs = [(count,data) for counts,data in cout_dict.items()]
 value_key_pairs.sort()
 #sorted(value_key_pairs)     
 return value_key_pairs[-n:]