def partition_entropy(subsets):
 total_count = sum((len(subset) for subset in subsets))
 return sum((((data_entropy(subset) * len(subset)) / total_count) for subset in subsets))

def partition_entropy ( subsets ) : total_count = sum ( ( len ( subset ) for subset in subsets ) ) return sum ( ( ( ( data_entropy ( subset ) * len ( subset ) ) / total_count ) for subset in subsets ) )
find the entropy from this partition of data into subsets .