Roy Smith wrote:
class Property:
def __init__ (self, block, lot, zoning="Unknown"):
self.block = block
self.lot = lot
self.zoning = zoning
def __hash__ (self):
return (self.block + self.lot)
def __cmp__ (self, other):
# I wish there was a less verbose way to do this!
if self.block < other.block:
return -1
if self.block > other.block:
return 1
if self.lot < other.lot:
return -1
if self.lot > other.lot:
return 1
return 0
Does this do what you want?
>>> class Property(object):
... def __init__(self, block, lot):
... self.block, self.lot = block, lot
... def __cmp__(self, other):
... return (cmp(self.block, other.block) or
... cmp(self.lot, other.lot))
...
>>> for i in (0, 1):
... for j in (0, 1):
... for k in (0, 1):
... for l in (0, 1):
... print i, j, k, l, cmp(Property(i,j),Property(k,l))
...
0 0 0 0 0
0 0 0 1 -1
0 0 1 0 -1
0 0 1 1 -1
0 1 0 0 1
0 1 0 1 0
0 1 1 0 -1
0 1 1 1 -1
1 0 0 0 1
1 0 0 1 1
1 0 1 0 0
1 0 1 1 -1
1 1 0 0 1
1 1 0 1 1
1 1 1 0 1
1 1 1 1 0
Steve
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