inconsistencies between the terminal version and the notebook

[zimmerma]

In the text version of Sage, var('x'); does not print anything. However, in the notebook, it prints x, even with the ; that should prevent output. This is quite annoying. Is there a reason for that?

Also, automatic_names does not work in the terminal version.

[jason]

Changed the title to identify the underlying issue. Note that 1+2; also prints out something in the notebook, but not in the command line.

My guess is that it is a convention in ipython, since a semicolon does nothing in just plain python:

% sage -python
Python 2.6.4 (r264:75706, May  6 2010, 23:38:46) 
[GCC 4.2.1 (Apple Inc. build 5659)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> 1+2;
3

[zimmerma]

note sure what to do with this ticket. At least we can try to list all inconsistencies between the terminal version and the notebook:

• 1+2; does not print anything in the terminal version, but does print something in the notebook

• __ and ____ do not work in the notebook

• automatic_names does not work in the terminal version

Are there any other differences?

Paul

[nbruin]

Replying to zimmerma:

• 1+2; does not print anything in the terminal version, but does print something in the notebook

The printing in the notebook is a little more different than just that:

1;2;

prints

1
2

whereas

1
2

prints

2

and

(1
)

prints nothing, whereas

(1)

prints

1

i.e., it seems that all results from statements contained entirely on the last line of the cell are printed, regardless of semicolons, and no other results are. To me this seems a little arbitrary, but resolving this is probably something for the notebook.

[zimmerma]

I've added automatic_names in the description as a reminder, since we write in our book about Sage (which is currently being translated to english) that automatic_names does not work in the terminal version.

[embray]

automatic_names also doesn't work in the Jupyter Notebook. This was also discussed in #25837. I looked into this a bit à year ago, and it turns out the automatic_names implementation lives in sagenb. It needs to be moved into the main sage package, and will take some adjusting to integrate into the IPython terminal and Jupyter kernel interfaces.

[embray]

I thought I also made a ticket specifically for this issue but I can't find it now, so maybe this is just the one.