How to get unique values with respective occurrence count from a list in Python?

Question

I have a list which has repeating items and I want a list of the unique items with their frequency.

For example, I have [\'a\', \'a\', \'b\', \'b\', \'b\']

Answer 1

Convert any data structure into a pandas series s:

CODE:

for i in sort(s.value_counts().unique()):
  print i, (s.value_counts()==i).sum()