Navigating sage source code

asked 2012-10-15 14:20:54 +0100

rmp251
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I'm thoroughly confused by the source code. I've downloaded and unpacked all the source code in spkg/standard and spkg/base, but what I get looks totally different from what I see when browsing the code online (http://hg.sagemath.org/sage-main/file...). Can someone please help me make sense of the source code? I just want to be able to navigate through the code that gets executed when some sage commands are invoked.

Thank you.

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answered 2012-10-15 15:13:17 +0100

John Palmieri

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If you've downloaded the source code for Sage but haven't built Sage yet (by typing 'make'), then as kcrisman says, the source code for the Sage library is packaged in SAGE_ROOT/spkg/standard/sage-5.2.spkg. So you could do this (starting from SAGE_ROOT):

$ cd spkg/standard
$ tar xfj sage-5.2.spkg
$ cd sage-5.2/sage

Then you can browse through the source code as found on line.

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answered 2012-10-15 14:41:20 +0100

kcrisman
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Look in SAGE_ROOT/devel/sage/sage for what you linked to, where SAGE_ROOT is your Sage install directory, often called sage-5.2-ubuntu-my_version or something.

Most of the stuff in spkg/standard is the code for all the 90-odd components of Sage. The stuff in the sage-5.2.spkg-style spkg is the stuff for Sage proper.

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Thanks I see that now. But that's from the installation. Why doesn't it give me that when I download the source (http://sagemath.org/download-source.html)?

rmp251 ( 2012-10-15 15:03:57 +0100 )edit

Note that if you've just downloaded the source code, there may not be anything in `SAGE_ROOT/devel/sage/sage`: it gets put there when Sage is built.

John Palmieri ( 2012-10-15 15:09:16 +0100 )edit

Yes, I guess the source code is provided assuming you want to build it, whereas I just wanted to look at it.

rmp251 ( 2012-10-15 15:24:10 +0100 )edit

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