#NEWLINE# @ Substitution ( name = 'rolling' ) #NEWLINE# @ Appender ( _doc_template ) #NEWLINE# @ Appender ( _shared_docs [ 'cov' ] ) #NEWLINE# def cov( self , other = None , pairwise = None , ddof = 1 , **kwargs ) : #NEWLINE# #INDENT# return super ( Rolling , self ) . cov ( other = other , pairwise = pairwise , ddof = ddof , ** kwargs )