Get output of a .py file in a browser

asked 2019-04-03 17:19:52 +0100

Hi-Angel
11 ●1

It seems like basic question, but I already spent about 2 hours, tried jupyter, command line, different combinations, different commands, lots of stuff…

Basically, I have file test.py with one line of content, taken straight from docs:

plot(graphs.HeawoodGraph())

I want to evaluate it, and get a picture of the plot in a browser.

What I don't want:

to open some external app for PNG files because in future I gonna need interactivity
to open the file in some text editor inside a browser because I already have it opened in Emacs
to get errors about graphs being undefined because when I execute in sage terminal, it's all correctly defined.
to search for imports to run every particular sage example from docs, because typing those examples directly in sage interactive interpreter works just fine (the examples don't include imports), so I see no reason to put an unnecessary effort over that.

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What operating system, and how was Sage installed?

slelievre ( 2019-04-18 19:19:55 +0100 )edit

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answered 2019-04-03 21:54:16 +0100

slelievre
17704 ●22 ●160 ●350 http://carva.org/samue...

updated 2019-04-03 21:57:06 +0100

If you don't want to add any import statement, rename your file to test.sage.

Let your file contain this:

graphs.HeawoodGraph().plot().show()

If you want to keep the file as .py you will need the import statements.

In this case:

from sage.graphs.graph_generators import graphs
graphs.HeawoodGraph().plot().show()

Note that the import statements are easy to figure out with the dedicated command.

sage: import_statements('graphs')
from sage.graphs.graph_generators import graphs

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Comments

Adding .show() simply adds a text output Graphics object consisting of 36 graphics primitives, but I don't get it in a browser (or even in a PNG viewer for that matter). If that helps, when I run the same code directly from sage interactive prompt, I get a bit different output Launched png viewer for Graphics object consisting of 36 graphics primitives.

Hi-Angel ( 2019-04-04 08:32:53 +0100 )edit

Are you running a SageMath kernel in the notebook? Or a plain Python kernel?

Iguananaut ( 2019-04-18 19:13:32 +0100 )edit

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