[Python-ideas] Add 'module' module, similar to 'keyword' module

[Terry Reedy]

This idea results from issue of user files shadowing stdlib files on 
import.  There was a thread on pydev about this yesterday.  There is 
also an opposite issue of builtin modules shadowing user files.

The keyword module provides kwlist and iskeyword function.  One use of 
kwlist is used in some other stdlib modules and can be used by syntax 
highlighters (as in IDLE).  Kwlist is updated by the main function.

A module module would have at least liblist and islibmodule function. 
Liblist would contain all directories with __init__.py and all .py 
files.  (I don't think files within package directories should be 
included, as there is no direct shadowing problem.)  A python oriented 
editor could then warn on save requests "This name matches a stdlib name 
in /Lib. If you run python in this directory, you will not be able to 
import the stdlib module.  Continue?".

The module should also have binlist and isbinmodule for builtin modules. 
  (I do not know how to get such a list.  If necessary, an api could be 
added.)  An editor could than warn "This name matches a builtin stdlib 
name.  You will not be able to import this file.  Continue?".

-- 
Terry Jan Reedy