I want to write a Vector class and it makes the most sense to just subclass
list. I also want to be able to instantiate a vector using either:
Vector( 1, 2, 3 )
OR
Vector( [1, 2, 3] )
so I have this:
class Vector(list):
def __new__( cls, *a ):
try:
print a
return list.__new__(cls, a)
except:
print 'broken'
return list.__new__(cls, list(a))
doing Vector( 1, 2, 3 ) on this class results in a TypeError - which doesn't
seem to get caught by the try block (ie "broken" never gets printed, and it
never tries to
I can do pretty much the exact same code but inheriting from tuple instead of
list and it works fine.
is this a python bug? or am I doing something wrong?
thanks,
-h.
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