ASKSAGE: Sage Q&A Forum - Latest question feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Sat, 27 Jan 2018 13:25:00 -0600Making a collection of functionshttps://ask.sagemath.org/question/40811/making-a-collection-of-functions/I have a somewhat large collection of functions that I wrote myself to make some computations. They are all very much dependent on each other so if I ever want to use some subset of them, say when I'm working in some Jupyter notebook, I have to copy paste the whole bunch of them into a cell and evaluate it. This makes the notebook really bulky and ugly. Is there anyway I can make these functions into a package so that I can just import it in any jupyter notebook that's in the same folder to use those functions?r2d2Sat, 27 Jan 2018 13:25:00 -0600https://ask.sagemath.org/question/40811/How do instantiate a new class properly?https://ask.sagemath.org/question/8013/how-do-instantiate-a-new-class-properly/## Background ##
I have created a new class `FeynmanGraph` that is a subclass of `Graph`. It has some extra methods, and the module in which it lives also has some extra functions. The most important method for my purposes searches for possible colorings of the vertices that satisfy certain combinatorial criteria that have to do with spanning trees. (The details are not important here.)
The code works. I should mention that I'm editing `feynman.sage` in a text editor and attaching it to a sage session in a terminal. Once a I create an instance of the class via
> `G = FeynmanGraph(...)`
everything seems to work.
Now, I created a module in which I would like to define specific graphs, with specific labeling of the vertices and edges, as well as plot positioning information. Shouldn't I be able to import the module `feynman` and make definitions such as the following?
> `from feynman import *`<br>
> `def FatY(): # a particular graph`<br>
> `G = FeynmanGraph(...)`<br>
> `...`<br>
> `return G`
When I do this, the methods for `FeynmanGraph` raise all kinds of errors of the type where they don't recognize various functions, such as `max` or `partitions_set`.
## Question ##
How do I structure the modules and classes so that I can instantiate the class properly?Sammy BlackFri, 18 Mar 2011 21:23:26 -0500https://ask.sagemath.org/question/8013/