Start builtins hierarchy

[rocky]

We can now nest builtins within a broader module.
For example under, "Special Functions" we can have "Orthogonal
Polynomials" and "Bessel Functions".

[mmatera]

@rocky, this and PR #1321 are covering the same? Or are independent?

[rocky]

@rocky, this and PR #1321 are covering the same? Or are independent?

#1321 was too ambitious. So this is the first commit from that. I'd like this to go in. And then I'll break up the remainder into a couple of smaller chunks.

[rocky]

@mmatera Now that this passes CI, I'd like to merge this into master so we can build off of this. Thoughts?

[mmatera]

Before merging, we should check first if these changes do not break the pymathics loading mechanism.

[rocky]

Before merging, we should check first if these changes do not break the pymathics loading mechanism.

Hmmm. It does break! I will investigate this later.

What is the special thing that is going on there that you thought to mention it?

[mmatera]

Just because of a couple of functions in builtin.init and builtin.base are called in pymathics_load_module, and it is something that we do not check in CI...

[rocky]

Just because of a couple of functions in builtin.init and builtin.base are called in pymathics_load_module, and it is something that we do not check in CI...

I spoke to soon when I said things weren't working. They still are. I had just upgraded my Python and didn't install install the pymathics modules. See below.

In the long term though the way to check this is from another project. For example mathics-omnibus which already builds a number of the more stable pymathics modules.

$ python ./setup.py develop
running develop
running egg_info
writing Mathics3.egg-info/PKG-INFO
writing dependency_links to Mathics3.egg-info/dependency_links.txt
writing entry points to Mathics3.egg-info/entry_points.txt
writing requirements to Mathics3.egg-info/requires.txt
writing top-level names to Mathics3.egg-info/top_level.txt
reading manifest file 'Mathics3.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching 'mathics/Makefile'
writing manifest file 'Mathics3.egg-info/SOURCES.txt'
running build_ext
skipping 'mathics/core/expression.c' Cython extension (up-to-date)
skipping 'mathics/core/numbers.c' Cython extension (up-to-date)
...
skipping 'mathics/builtin/graphics.c' Cython extension (up-to-date)
Creating /home/rocky/.pyenv/versions/3.7.10/lib/python3.7/site-packages/Mathics3.egg-link (link to .)
Mathics3 2.1.1.dev0 is already the active version in easy-install.pth
Installing mathics script to /home/rocky/.pyenv/versions/3.7.10/bin

Installed /src/external-vcs/github/mathics/Mathics
Processing dependencies for Mathics3==2.1.1.dev0
...
Best match: zipp 3.4.0
Adding zipp 3.4.0 to easy-install.pth file

Using /home/rocky/.pyenv/versions/3.7.10/lib/python3.7/site-packages
Finished processing dependencies for Mathics3==2.1.1.dev0
08:43:27 [builtin-submodules-small] rocky@muffin:/src/external-vcs/github/mathics/Mathics [1,0,b] 0
$ mathics

Mathics 2.1.1.dev0
on CPython 3.7.10 (default, Feb 23 2021, 10:13:46) 
using SymPy 1.7.1, mpmath 1.2.1, numpy 1.20.2, cython 0.29.22

Copyright (C) 2011-2021 The Mathics Team.
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
See the documentation for the full license.

Quit by evaluating Quit[] or by pressing CONTROL-D.

In[1]:= LoadModule["pymathics.natlang"]
Out[1]= pymathics.natlang

In[2]:= Pluralize["try"]
Out[2]= tries

[mmatera]

Excellent! Then, go ahead with merging!

[rocky]

Excellent! Then, go ahead with merging!

Thanks for your patience, tolerance and guidance!