#NEWLINE# def __call__( self , environ , start_response ) : #NEWLINE# #INDENT# head = self . head #NEWLINE# if ( head is None ) : #NEWLINE# #INDENT# head = self . tail #NEWLINE# for ( name , callable ) in self . pipeline [ : : ( - 1 ) ] : #NEWLINE# #INDENT# conf = self . config . get ( callable , { #NEWLINE# #INDENT# #NEWLINE# #UNINDENT# } ) #NEWLINE# head = callable ( head , ** conf ) #NEWLINE# #UNINDENT# self . head = head #NEWLINE# #UNINDENT# return head ( environ , start_response )