[Python-checkins] peps: Clean up a few items: the 'import os.path as p' syntax and the

Wed Mar 23 21:26:37 CET 2011

http://hg.python.org/peps/rev/e3b977b7348a
changeset: 144:e3b977b7348a
user: Thomas Wouters <thomas at python.org>
date: Wed Aug 23 12:09:07 2000 +0000
summary:
 Clean up a few items: the 'import os.path as p' syntax and the
'extended-as'-assignment syntax, both of which Guido has decided on.
files:
 pep-0221.txt | 34 +++++++++++++++-------------------
 1 files changed, 15 insertions(+), 19 deletions(-)

diff --git a/pep-0221.txt b/pep-0221.txt
--- a/pep-0221.txt
+++ b/pep-0221.txt
@@ -3,7 +3,7 @@
 Version: $Revision$
 Author: thomas at xs4all.net (Thomas Wouters)
 Status: Accepted
-Type: Standard
+Type: Standards Track
 Python-Version: 2.0
 Created: 15-Aug-2000
 Post-History:
@@ -49,16 +49,19 @@
 has to be used to convince the CPython parser it isn't one. For
 more advanced parsers/tokenizers, however, this should not be a
 problem.
+
+ A slightly special case exists for importing sub-modules. The
+ statement
+
+ import os.path 
+
+ stores the module `os' locally as `os', so that the imported
+ submodule `path' is accessible as `os.path'. As a result,
 
- To avoid confusion, importing a submodule `as' another module is
- not allowed. When importing a submodule in the normal way,
- 
- import os.path
- 
- The actual name stored locally is `os', not `path', and the newly
- imported module can be referenced as `os.path'. When introducing
- the `as' keyword, it is unclear whether the `os' module or the
- `path' sub-module should be stored `as' the requested local name.
+ import os.path as p
+
+ should store `os.path', not `os', in `p'. The current
+ implementation does not yet support this.
 
 
 Implementation details
@@ -85,15 +88,8 @@
 change to accomodate this is minimal, as the patch proves[2], and
 the resulting generalization allows a number of new constructs
 that run completely parallel with other Python assignment
- constructs.
-
- import sys as x['sys']
-
- from MyFastcPickle import Pickler as shelve.Pickler
- 
- from sys import version_info as (maj, min, pl, relnam, relno)
- 
- from sys import path as mypath[-1:]
+ constructs. However, this idea has been rejected by Guido, as
+ `hypergeneralization'.
 
 
 Copyright
-- 
Repository URL: http://hg.python.org/peps
