If I had one functionality to have in Sympy, it would be the possibility to get access to a list of symbols that I am using in my notebook. A function called, let's say LstSymbols(), which give the name of the symbols that are in use in the notebook in addition to their values . This way, I can see if, by manipulations, I change some values of the symbols. Or maybe that function already exists? That would be a good thing to have when you are trying to get back some steps. Just as suggestion!
Le jeudi 7 décembre 2023 à 09:49:36 UTC-5, [email protected] a écrit : > Jupyter notebook is already a good framework to write code like literature, > and unfortunately, I don't think that we need a different tooling from > SymPy to do that. > > I just advice to make multiple cells, structure your notebooks well, > and print the intermediate results of your computation often in your cell > (use print or display) > > I don't think that it is easy for any computer algebra, or related tools > to support 'step-back' functionality. > I haven't seen that in other competitors, like Mathematica, too. > The problem can be generalized to time-travel debugging (Time travel > debugging - Wikipedia > <https://en.wikipedia.org/wiki/Time_travel_debugging>), > and it is an area of research, if it matters how to do it correctly, or > efficiently. > > On Wednesday, December 6, 2023 at 10:20:16 PM UTC [email protected] wrote: > >> Aaron's comments are really important. These are pitfalls that can easily >> lead to inconsistent outcomes and notebooks that do not work. >> >> On Wednesday, December 6, 2023 at 3:09:16 PM UTC-6 [email protected] >> wrote: >> >>> It really depends on how you structure your code. SymPy expressions >>> are immutable, so if you just assign each step to a different >>> variable, you can easily refer back to previous variables. >>> >>> You should also be careful with Jupyter notebooks that if you delete >>> cells, or insert cells before other cells, you may end up with a >>> notebook that doesn't actually execute again if you open it again >>> later, because when you start a notebook from scratch the cells are >>> always executed from top to bottom, which may not be the original >>> execution order. It can sometimes be a good idea to "restart and run >>> all" in your notebook to reset the state and ensure everything runs >>> again. >>> >>> Aaron Meurer >>> >>> On Mon, Dec 4, 2023 at 10:24 AM Mario Lemelin <[email protected]> >>> wrote: >>> > >>> > Hello, >>> > This is my first time. Just wondering if there is a command that I can >>> do when, in a jupyter notebook, when I want to go back one step (If I did a >>> bad algebraic manipulation for example). Thank you in advance for your >>> help. Mario >>> > >>> > -- >>> > You received this message because you are subscribed to the Google >>> Groups "sympy" group. >>> > To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> > To view this discussion on the web visit >>> https://groups.google.com/d/msgid/sympy/82c3aedb-215b-4083-a462-42bbc5684632n%40googlegroups.com. >>> >>> >>> >> -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/b8bf74c3-511c-49d6-b5e4-cd8ee5681e6en%40googlegroups.com.
