Hi John, On Sun, Aug 16, 2009 at 4:55 AM, jds<schulmanner...@gmail.com> wrote: > > I'm using a local sage installation as my main python distribution, so > I run "sage -sh" before doing any python work. If I download and > install newer versions of the packages, e.g. networkx, which has some > api changes in the new versions, will this possibly break my sage > installation? Or does sage still call the older version?
One of the main ideas of Sage is that we ship all dependencies, or most of them, in one tarball to ease installation, maintenance, and debugging. You can (re)install any of the standard packages from the standard packages repository http://www.sagemath.org/packages/standard/ Such packages are extensively tested before each release so they won't break your local Sage installation. The packages from optional packages repository at http://www.sagemath.org/packages/optional/ can also be installed, but some of them are not extensively tested before each release mainly because of a shortage of maintainers and time. Installing any packages from the optional repository usually doesn't break your local Sage installation. And when you use such a package from within a Sage session, chances are that it won't mess up your Sage installation even if you encounter an error from that package. Besides the standard and optional packages repositories, there is also the experimental packages repository at http://www.sagemath.org/packages/experimental/ As the name suggests, these packages are experimental, haven't been tested extensively and may break your Sage installation. For any Python packages other than those in the standard, optional, and experimental repositories, I cannot say with certainty that they won't break your Sage installation. The current version of NetworkX that is shipped with Sage is version 0.36. But that didn't stop me from installing NetworkX version 0.99: [mv...@sage networkx-0.99]$ ../sage-4.1.1-sage.math/sage -python setup.py install This newer version of NetworkX installed successful under my copy of Sage; it's located in sage-4.1.1-sage.math/local/lib/python/site-packages/networkx-0.99-py2.6.egg whereas the one that is shipped with Sage is located in sage-4.1.1-sage.math/local/lib/python/networkx But then I notice this: sage: from networkx.[TAB] networkx.adjlist networkx.edgelist networkx.multidigraph networkx.algorithms networkx.exception networkx.multigraph networkx.atlas networkx.function networkx.nx_pylab networkx.bipartite networkx.generators networkx.nx_yaml networkx.boundary networkx.geometric networkx.operators networkx.centrality networkx.gml networkx.path networkx.classes networkx.gpickle networkx.random_graphs networkx.classic networkx.graph networkx.readwrite networkx.clique networkx.graphml networkx.release networkx.cluster networkx.hybrid networkx.search networkx.component networkx.info networkx.sets networkx.convert networkx.isomorph networkx.small networkx.copy networkx.isomorphism networkx.sparsegraph6 networkx.core networkx.isomorphvf2 networkx.spectrum networkx.dag networkx.labeleddigraph networkx.tests networkx.degree_seq networkx.labeledgraph networkx.threshold networkx.digraph networkx.layout networkx.traversal networkx.directed networkx.leda networkx.tree networkx.distance networkx.linalg networkx.ubigraph networkx.drawing networkx.matching networkx.utils which is a mixture of the namespaces from both installed versions of NetworkX. So in this case, installing a newer version of NetworkX into SAGE_ROOT/local/lib/python is dangerous. -- Regards Minh Van Nguyen --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
