Bugs item #1179412, was opened at 2005-04-08 15:42
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Category: Windows
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: steveward (steveward)
Assigned to: Nobody/Anonymous (nobody)
Summary: can't import thru cygwin symlink
Initial Comment:
This may be a cygwin-specific problem: given foo.py:
> ln -s foo.py bar.py
> python
Python 2.4 (#1, Dec 4 2004, 20:10:33)
[GCC 3.3.3 (cygwin special)] on cygwin
Type "help", "copyright", "credits" or "license" for more
information.
>>> import foo
This is file foo.py.
>>> import bar
Traceback (most recent call last):
File "<stdin>", line 1, in ?
ImportError: No module named bar
Despite the problem with imports, most os.path utilities
(exists, isfile, islink, isdir) work on cygwin symlinks.
An exception is reailpath: realpath("bar.py") returns a
path to the symlink, not to the real file.
Suspecting this as a key to the import problem, I tried
several recent python/cygwin release versions (all
installed via cygwin's setup.exe).
FIndings:
Cygwin Python realpath Import
1.5.xx: 2.yy: Works? Works?
--------- -------------- ----------- ----------
1.5.14 2.4 NO NO
1.5.13 2.3.4 YES NO
1.5.14 2.3.4 YES NO
1.5.12 2.4 NO YES
Neither bug shows up under Linux.
The two problems seem uncorrelated, although it may
be that each is due to some assumpion about symlink
semantics that isn't true of the Cygwin implementation.
Apologies if these problems have been previously
submitted in a form my quick scan didn't identify. A
corresponding note has been submitted to the cygwin
mailing list.
- Steve
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