[Python-Dev] Py3k: magical dir()

Dmitry Vasiliev dima at hlabs.spb.ru
Fri Dec 19 15:20:55 CET 2008


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

-- 
Dmitry Vasiliev (dima at hlabs.spb.ru)
   http://hlabs.spb.ru


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