Re: [Tutor] Am I storeing up problems ?

[Dave S]

Alan Gauld wrote:
I needed to copy this matrix to 'self.old_data', so I have been
   

using
 

.deepcopy(), which works OK but is SLOW .... (12+ secs)
   

Are you sure you need to copy it./ A simple reassignment should work
and then reconstruct the structure using fresh lists/dictionary etc.
That should work faster.
Alan G.
 

Yep this is what I ended up doing, 12+ secs becomes 0.5 sec :-)
My query was To speed things up I changed my code to
# This is the speeded up deepcopy()
self.old_data = self.data
self.data = []
for i in range(110):
  self.data.append({})
Query: Is all this OK, it works and quick as well, but I am concerned I 
may be leaving garbage in the Python PVM since I am shrugging off old 
'self.old_data's which may be mounting up ?

But apparently this is ok (as he cancelles order gor 1GB RAM ;-) )
Dave
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