#NEWLINE# def combine( self , other ) : #NEWLINE# #INDENT# if ( not isinstance ( other , TimeIncrement ) ) : #NEWLINE# #INDENT# raise TypeError ( 'Must be a fixed size timedelta, was {0!r}' . format ( type ( other ) ) ) #NEWLINE# #UNINDENT# ( a , b ) = _to_common_units ( [ self , other ] ) #NEWLINE# return type ( a ) ( ( a . n + b . n ) )