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How can I change the sage console prompt?

asked 2018-06-30 02:27:27 -0500

sageuser1732 gravatar image

updated 2018-07-01 08:26:59 -0500

tmonteil gravatar image

How can I change the sage console prompt from 'sage: ' to '>>> ' ?

I'm running Sage 8.1 (binary install) in Windows 7.

I assume I need to edit a configuration file, or perhaps it's controlled by an environmental variable.

If it's controlled by an environmental variable, which one, and what setting?

If it needs a configuration file edit, which file, where is the file located, and what edit is needed?

Thanks in advance.

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If relevant to anyone with a dark background in their terminal wanting to change the color in the prompt, an option is to go to colors under src/sage/repl/prompts.py. Possible values to return are any of [u'Neutral', u'NoColor', u'LightBG', u'Linux'].

fidbc gravatar imagefidbc ( 2018-06-30 20:42:10 -0500 )edit
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@fidbc, or after starting Sage, just type one of %colors LightBG, %colors Linux, %colors Neutral, %colors NoColor. Or you could put such a line in a file called init.sage inside the .sage folder in your home directory.

slelievre gravatar imageslelievre ( 2018-07-02 09:51:29 -0500 )edit

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answered 2018-06-30 06:30:00 -0500

tmonteil gravatar image

updated 2018-07-02 06:15:41 -0500

The sage prompt is set in the file src/sage/repl/prompts.py, you can just modify the line 23 and rebuild (make buildfrom Sage root). See the file at https://git.sagemath.org/sage.git/tre...

Alternatively, within Sage console (or in your ~/.sage/init.sage file), you can type:

from IPython.terminal.prompts import ClassicPrompts
ip = get_ipython()
ip.prompts = ClassicPrompts(ip)

If you want to make your own custom prompt (not the Python classical one), you can do:

from IPython.terminal.prompts import Prompts, Token
class MyPrompt(Prompts):
    def in_prompt_tokens(self, cli=None):
        return [(Token.Prompt, 'hello: ')]
ip = get_ipython()
ip.prompts = MyPrompt(ip)

See the documentation at https://ipython.readthedocs.io/en/sta...

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Works perfectly! (I used the init.sage method.) Thank you very much!

sageuser1732 gravatar imagesageuser1732 ( 2018-06-30 11:20:30 -0500 )edit

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Asked: 2018-06-30 02:17:26 -0500

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Last updated: Jul 02