>>> reversed(a) == reversed(a)
False
>>> reversed(a)
<reversed object at 0x7f193ff61fd0>
>>> sorted(a)
[1, 2, 3]
>>> sorted(reversed(a))
[1, 2, 3]
>>> b = reversed(a)
>>> sorted(b)
[1, 2, 3]
>>> sorted(b) == sorted(b)
True
>>>
>>> a
(2, 1, 3)
>>>
ajd@hal:~$
ajd@hal:~$ python
Python 2.7.10 (default, Sep 13 2015, 20:30:50)
[GCC 5.2.1 20150911] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> a = 2, 1, 3
>>> sorted(a) == sorted(a)
True
>>> reversed(a) == reversed(a)
False
>>> b = reversed(a)
>>> sorted(b) == sorted(b)
False
>>> reverse
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'reverse' is not defined
>>>