is this a bug? (python 2.3)
Carsten Haese
carsten at uniqsys.com
Fri Mar 9 15:43:53 EST 2007
On Fri, 2007-03-09 at 12:32 -0800, Sean McIlroy wrote:
> hi all
>
> when i run this code in python 2.3
>
> ###################### BEGIN CODE
> class warfare:
> def __init__(self): self.pairs = [[0,0]]*2
> def __str__(self): return str(self.pairs)
> def setfirst (self,i,value): self.pairs[i][0] = value
> def setsecond(self,i,value): self.pairs[i][1] = value
>
> w = warfare()
> print w
> w.setfirst(0,'hello')
> print w
> ###################### END CODE
>
> i get this result
>
> ###################### BEGIN ACTUAL RESULT
> [[0, 0], [0, 0]]
> [['hello', 0], ['hello', 0]]
> ###################### END ACTUAL RESULT
>
> instead of the expected result
>
> ###################### BEGIN EXPECTED RESULT
> [[0, 0], [0, 0]]
> [['hello', 0], [0, 0]]
> ###################### END EXPECTED RESULT
http://www.python.org/doc/faq/programming/#how-do-i-create-a-multidimensional-list
-Carsten
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