[Python-Dev] In-place multiply and new style classes
Todd Miller
jmiller@stsci.edu
2002年3月27日 16:05:02 -0500
Martin v. Loewis wrote:
>Todd Miller <jmiller@stsci.edu> <mailto:jmiller@stsci.edu> writes:
>>>TypeError: can't multiply sequence to non-int
>>>>It seems that this has been fixed in the CVS.
>>Regards,
>Martin
>I updated to the head and I still get:
>class test1(object):
def __init__(self):
pass
def __imul__(self, other):
print "no luck here!"
Python 2.3a0 (#3, Mar 27 2002, 15:27:32)
[GCC 2.96 20000731 (Red Hat Linux 7.1 2.96-98)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> t = test1()
>>> t *= 1
no luck here!
>>> t *= 1.
Traceback (most recent call last):
File "<stdin>", line 1, in ?
TypeError: unsupported operand type(s) for *=: 'NoneType' and 'float'
The latter is still a problem for me because Numarray needs to implement
both sequence and number protocols, and wants the number protocol to
dominate *=. What I think I see happening in both cases is the sequence
protocol executing. Sorry if this is an old issue...
Todd
--
Todd Miller jmiller@stsci.edu <mailto:jmiller@stsci.edu>
STSCI / SSG (410) 338 4576