#11729: Cache module import locations
---------------------------+------------------------------------------------
Reporter: vbraun | Owner: jason
Type: enhancement | Status: new
Priority: major | Milestone: sage-4.7.2
Component: misc | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author: Volker Braun
Merged: | Dependencies:
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This ticket implements a cached module importer for Python. It hooks into
the Python import framework and caches whether a module was found and if
so, its location. The cache is persistent over sessions.
Except for the location of the persistent storage (in
`DOT_SAGE/import_cache.txt`) there is no dependency on Sage.
By default, the cached importer is not active. To activate it on your
system, you have to import the module at one point in the Python startup,
preferably as early as possible. The easiest way to do so is to create a
file `$SAGE_LOCAL/lib/python/site-packages/sitecustomize.py` containing
the single line
{{{
import sage.misc.importer
}}}
Some benchmarks:
{{{
#!sh
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11729>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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