In the spirit of the StackOverflow threads of "hidden" language features, we can use this thread (community wiki) to aggregate useful but little-known features or tricks of Sage. Perhaps these can be collected and added to the documentation in the future.
You can clear the screen by simply entering clear, as in a Bash shell.
Though is general for python, it is always worth reading: Code like a Pythonista
Sébastien Labbé has a blog post with various Sage tricks.
The function get_systems from sage.misc.citation will tell you the backends used to evaluate some code. For example,
sage: from sage.misc.citation import get_systems
sage: get_systems('sqrt(x)')
['MPFI', 'MPFR', 'GMP']
sage: get_systems('sqrt(3.4)')
['MPFR']
Apparently, this question disapeared, i repost it though i was not its original author. Sorry for not making this answer an anonymous wiki as it should be. In the recent versions of askbot, only one answer per user is allowed, so i had to trick by first writing a comment, and then transform it into an answer, but that way i could not make it anonymous :(
To preview LaTeX code from the command line, use the following:
show(LatexExpr(r'\frac{3}{4}x + 3'))
From the notebook,
html(r'$\frac{3}{4}x + 3$')
also works.
By the way, it would be useful (if it doesn't already exist) to have a function to render LaTeX code to an image just large enough to fit the expression, for export to environments that do not support LaTeX (an HTML website, for example).
Asked: 2013-04-29 01:09:50 +0100
Seen: 4,153 times
Last updated: Oct 15 '20
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