[ python-Bugs-1731068 ] Importing a submodule fails after unloading its parent

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Bugs item #1731068, was opened at 2007-06-04 16:21
Message generated for change (Settings changed) made by blakeross
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>Category: Python Interpreter Core
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Blake Ross (blakeross)
Assigned to: Nobody/Anonymous (nobody)
Summary: Importing a submodule fails after unloading its parent

Initial Comment:
It seems that if you import a submodule, cause its parent package to be destroyed, then attempt to re-import the submodule, the parent package is properly re-imported but the submodule does not get set on it.

The session below demonstrates this. After the second xml.sax import, "xml" is the xml package module as expected, but xml.sax does not exist. I'm not familiar with all of the import semantics, but it seems odd to me that "foo.bar" could ever fail to exist right after an "import foo.bar".

Python 2.5 (r25:51908, Sep 19 2006, 09:52:17) [MSC v.1310 32 bit (Intel)] o
32
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys, xml.sax
>>> del xml, sys.modules["xml"]
>>> import xml.sax
>>> xml.sax
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'sax'
>>>

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