Release memory: how?

asked 2010-09-21 15:04:43 +0200

roland
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I have a program which uses large sets. After the calculation these files can be deleted (to release memory). How? Roland

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Can you post your code? Or the relevant parts?

ccanonc ( 2010-09-21 17:17:27 +0200 )edit

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answered 2010-09-21 17:16:16 +0200

ccanonc
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Please clarify your meaning (in terminology). By files, do you mean in RAM or on disk? Both meanings are possible in programming terminology.

To release a sage/python object still in scope, call del(objname).
If you want to delete a disk file, you can find it under the "~/.sage/" directory on unix-like systems.

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Thank you: del does the trick. A pitty that del? does not give a hint in sage....

roland ( 2010-09-22 00:42:16 +0200 )edit

The reason is that del is a keyword statement in python, not a first-class object (not everything is an object in python):

http://docs.python.org/release/2.6.6/reference/lexical_analysis.html#keywords
http://docs.python.org/release/2.6.6/reference/simple_stmts.html#the-del-statement

ccanonc ( 2010-09-22 01:39:36 +0200 )edit

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