Re: [Python-Dev] Py3k: magical dir()

[Eric Smith]

Christian Heimes wrote:

Dmitry Vasiliev schrieb:

Hello!

I think it's a strange behavior:

Python 3.1a0 (py3k:67851, Dec 19 2008, 16:50:32)
[GCC 4.0.3 (Ubuntu 4.0.3-1ubuntu5)] on linux2
Type "help", "copyright", "credits" or "license" for more information.

hash(range(10))

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unhashable type: 'range'

dir(range(10))

['__class__', '__delattr__', '__doc__', '__eq__', '__format__',
'__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__',
'__init__', '__iter__', '__le__', '__len__', '__lt__', '__ne__',
'__new__', '__reduce__', '__reduce_ex__', '__repr__', '__reversed__',
'__setattr__', '__sizeof__', '__str__', '__subclasshook__']

hash(range(10))

-1211318616

hash(range(1000))

-1211318472

Yes, it is. I'm able to reproduce the problem.

It's not just dir(). Same behavior with help():

Python 3.1a0 (py3k:67856, Dec 19 2008, 10:18:03)
[GCC 4.0.1 (Apple Inc. build 5465)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> hash(range(10))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unhashable type: 'range'
[43173 refs]
>>> help(range(10))

[77213 refs]
>>> hash(range(10))
5041912
[77215 refs]
>>>
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