Python Counter snippet
In[1]: from collections import Counter
In[2]: ports = ['33680',
'33680',
'33680',
'33677',
'33677',
'33677',
'33677',
'33677',
'33677',
'33677',
'33677',
'33677',
'33860',
'33860',
'33860',
'33860',
'33860',
'33656',
'33656',
'33656',
'33656',
'33656',
'33656',
'33656',
'33656',
'33656',
'33656',
'33656',
'33157',
'33157']
In [3]: Counter(ports)
Out[4]: Counter({'33656': 11, '33677': 9, '33860': 5, '33680': 3, '33157': 2})