Terry Reedy wrote:
On 5/18/2011 2:51 PM, Ethan Furman wrote:
In Python 3 inequality comparisons became forbidden.
--> 123 < [1, 2, 3]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unorderable types: int() < list()
However, equality comparisons are still allowed
--> 123 == [1, 2, 3]
False
But you can't mix them (inequality wins)
--> 123 <= [1, 2, 3]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unorderable types: int() <= list()
I realize this is probably a Py4000 change if it happens at all, but
does this make sense? Shouldn't an attempt to compare to unlike objects
be a TypeError, just like trying to order them is?
It bit me when I tried to compare a byte string element with a single
character byte string (of course they should have matched, but since the
element was an int, the match was not longer True).
Questions/comments like this that are not about developing the next
versions of Python, as you acknowledge above, really belong elsewhere,
like on the ideas list.
My apologies. I'll be more careful.
~Ethan~
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