Reply to thread

Message

[QUOTE="Peter Otten, post: 2041360"]
From [URL]http://www.jorendorff.com/articles/python/path/changes.html[/URL]:

"""
This page describes recent changes to the Python path module.

2.1

[...]

Better support for subclassing path. All methods that returned path objects
now respect subclassing.

Before: type(PathSubclass(s).parent) is path

Now: type(PathSubclass(s).parent) is PathSubclass
"""

So my assumption was that you are using a pre-2.1 version of path.
I suggest that you double-check that by inserting a

print path.__version__

into the code showing the odd behaviour before you start looking for more
exotic causes.

For newstyle classes

a = A()
a / 42 # or any other operation implemented via __xxx__()

(unlike a.__div__) will only look into the class for a __div__() special
method and ignore methods defined in the instance or via the __getattr__()
mechanism.

For delegation to work you need (untested)

class NormPath(object):
   def __div__(self, other):
       return self.__class__(self._path / other)
   # ...

Peter
[/QUOTE]

Verification