[Python-ideas] Proposing additions to the standard library

[Jonathan Crall]

I'm interested in proposing several additions to the Python standard
library, and I would like more information on the procedure for doing so.
Are all additions done via a PEP? If not what is the procedure. If so, I've
read that the first step was to email this board and get feedback.

I have a library called `ubelt` that contains several tools that I think
might be worthy of adding to the standard library.

Here's my bullet point pitch:

   - Python is batteries included. Ubelt contains extra batteries.
   function are extra batteries.
   - Most function in ubelt are fast. All 222 tests takes 7.33 seconds.
   - Ubelt has 100% test coverage (sans `# nocover` locations).
   - I'm only championing a subset of the functions in ubelt. There are
   certainly functions in there that do not belong in the standard library.
   - I have a Jupyter notebook that give a demo of some select functions
   (not necessarily the same as the ones proposed here):
   https://github.com/Erotemic/ubelt/blob/master/docs/notebooks/Ubelt%20Demo.ipynb
   - I do have documentation (mostly in docstrings) and in the docs folder,
   but I've been having trouble auto-updating read-the-docs. Here is the link
   anyway: https://ubelt.readthedocs.io/en/latest/

Here is a tentative list of interesting functions. Hopefully the names are
descriptive (if not, see docstrings: https://github.com/Erotemic/ubelt)

ub.cmd

ub.compressuser

ub.group_items

ub.dict_hist

ub.find_duplicates

ub.AutoDict

ub.import_module_from_path

ub.import_module_from_name

ub.modname_to_modpath,

ub.modpath_to_modname

ub.ProgIter

ub.ensuredir

ub.expandpath


almost everything in util_list:

allsame, argmax, argmin, argsort, argunique,

chunks, flatten, iter_window, take, unique


These functions might be worth modifying into dictionary methods:

ub.dict_subset

ub.dict_take

ub.map_vals

ub.map_keys

ub.Timerit

ub.Timer



Because I built the library, I tend to like all the functions. Its
difficult to decide if they are stdlib worthy, so there might be some false
positives / negatives.

I'm on the fence about:
CacheStamp, Cacher, NoParam, argflag, argval, dzip, delete, hash_data,
hash_file, memoize, memoize_method, NiceRepr, augpath, userhome,
ensure_app_cache_dir, ensure_app_resource_dir, find_exe, find_path,
get_app_cache_dir, get_app_resource_dir, platform_cache_dir,
 platform_resource_dir, CaptureStdout, codeblock, ensure_unicode, hzcat,
 indent, OrderedSet


Its my hope that some of these are actually useful. Let me know any of the
following: what you think, if there are any questions, if something else
needs to be done, or what the next steps are.

-- 
-Jon
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