On Tue, Mar 13, 2018 at 6:36 PM, Vincent Delecroix <20100.delecr...@gmail.com> wrote: > I remember somebdy implementing directly in Ipython at some Sage days > (there is a way to plug hooks as we do with the preparser). The hook > itself was very naive (just a while loop catching NameError in sage_eval).
That's actually almost exactly how it works in the Sage Notebook (it's a for loop instead of a while loop with a limit of the number of names to attempt to convert). There's little about how it's implemented that isn't transferrable to IPython. > On 13/03/2018 18:32, Erik Bray wrote: >> >> Paul Zimmerman pointed out to me that there's a feature of the legacy >> Sage Notebook, automatic_names() , which turns on automatic >> creation of symbolic variables and functions when they are not already >> defined. For example, by default if you enter: >> >> sage: x + y + z >> >> you get: >> >> NameError: name 'y' is not defined >> >> ('y', in this case, because 'x' is pre-defined as a special case). >> With automatic_names(True) it inserts a shim into the Sage syntax >> pre-processor that automatically creates variables from names not >> already found in globals(). >> >> I see no reason this feature needs to be confined to the legacy >> Notebook, as opposed to being in Sage proper. Then that feature would >> be usable at the command-line, as well as in the Jupyter Notebook. >> >> Thoughts? >> >>  >> https://github.com/sagemath/sagenb/blob/e6910891f445e47690760966441328971d51a78d/sagenb/misc/support.py#L602 >> > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-devel+unsubscr...@googlegroups.com. > To post to this group, send email to firstname.lastname@example.org. > Visit this group at https://groups.google.com/group/sage-devel. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to email@example.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.