You may want to deepcopy instead of just copy? On 2/25/11, ranjan das <[email protected]> wrote: > I am facing the following problem > > > I have a list of the form > > INPUT= [ [ ['A1-N','A2-Y','A3-N' ],['B1-Y','B2-N','B3-N' ] ], [.........] ] > > > and I want an output of the form (selecting only those elements which have a > Y associated with them) > > OUTPUT=[ ['A2-Y', 'B1-Y'],[....] ] > > > I wrote the following code. Although it gives me the desired output, it > CHANGES the list INPUT > > now after i run the code I get INPUT as the same as OUTPUT (which i dont > want to happen). I have used the copy function but it still is not working. > Any help or pointers is appreciated > > *CODE* > > from copy import copy > > temp=copy( INPUT ) > OUTPUT=temp > > > > for i in range(len(temp)): > > for j in range(len(temp[i])): > > for k in range(len(temp[i][j])): > > if temp[i][j][k][-1]=='Y': > > OUTPUT[i][j]=temp[i][j][k] >
-- Have a great day, Alex (msg sent from GMail website) [email protected]; http://www.facebook.com/mehgcap _______________________________________________ Tutor maillist - [email protected] To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
