search_def(), search_src() are not working in Sage

[Adarsh Kishore]

Hello everyone,

I was going through some of the Sage functions and I wanted to look it up in the source file definitions. For this I tried search_def() and then search_src(). In both cases it gave a warning "that the Sage documentation is not available".

I have tried to look up the official Sage developer's manual, StackOverflow questions and GitHub issues. However, it has not worked out for me, unfortunately.

On the other hand, the search_doc() command works fine for me. This is the output for 

search_doc("add_edges()")

Is there any documentation that I have to build before I can use these commands? I would appreciate it if someone can give pointers to some helpful links or online documentation where this issue has been addressed.

[Emmanuel Charpentier]

How did you install Sage ? And on what platform ?

[slelievre]

From the screenshot it looks like Ubuntu?

In which case, did you install Sage as an Ubuntu package?

or by building it from source? or via Conda? or in some

other way?

If you installed Sage using Ubuntu's package manager,

by selecting the package `sagemath`, you may also

want to install `sagemath-doc` (and maybe also, though

unrelated to your question here, `sagemath-jupyter`).

If you built Sage from source, the documentation should

have been built, but if it was not, try to build it by running

```

make sagemath_doc_html

```

from the root folder of your Sage installation.

[Adarsh Kishore]

Sorry for not mentioning earlier. My platform is Ubuntu 20.04 LTS and my Sage version is 'SageMath version 9.0, Release Date: 2020-01-01'.

I used 'sudo apt install sagemath sagemath-jupyter sagemath-doc-en'
to install sage along with sagemath-jupyter and sagemath-doc-en

I also cloned the GitHub repository of sage for developers and built it from source. 

[slelievre]

So you installed two versions of Sage, one via

the Ubuntu package manager, the other one

built from source.

When you start Sage, it probably starts the one

installed via the package manager, likely Sage 9.0.

The one you built from source is likely either Sage 9.5

(the latest stable version) or Sage 9.6.beta5 (the latest

development version) if you used the develop branch.

If you want the Sage built from source to be started

rather than the system one, run this command,

assuming you cloned Sage in your home folder

using the default name `sage`:

```

sudo ln -sf $HOME/sage/sage /usr/local/bin

```

[Adarsh Kishore]

I tried running

```

make sagemath_doc_html

```

as instructed. Unfortunately, it does not solve the error.

[Eric Gourgoulhon]

Hi,

Le mercredi 23 mars 2022 à 20:52:08 UTC+1, adarsh.k...@gmail.com a écrit :

I tried running

```

make sagemath_doc_html

```

as instructed. Unfortunately, it does not solve the error.

You are still running SageMath 9.0, which the version shipped with Ubuntu 20.04.  It is outdated. To fix this,

1/ remove the Ubuntu package "sagemath"

2/ Install SageMath 9.5 by following these simple instructions:

https://sagemanifolds.obspm.fr/install_ubuntu.html

Then search_src, search_def and search_doc will work. 

Eric.

[Adarsh Kishore]

Yes, the problem indeed was that I was using ```make``` on the documentation in the ```develop``` branch which is SageMath v 9.6.beta4, and I was expecting it to run in SageMath 9.0.

In the updated versions, search_def() and search_src() work as expected.

Thank you everyone for the help