I have the following program
class slt:
__slots__ = ()
def getslots(self):
print("### slots =", self.__slots__)
if self.__slots__ == ():
return []
else:
ls = super().getslots()
ls.extend(self.__slots__)
return ls
def __str__(self):
ls = []
attrs = self.getslots()
for attr in attrs:
ls.append(str(getattr( self, attr)))
return '->'.join(ls)
class slt1 (slt):
__slots__ = 'fld1', 'fld2'
def __init__(self, vl1, vl2):
self.fld1 = vl1
self.fld2 = vl2
class slt2(slt1):
__slots__ = 'fld3',
def __init__(self, vl1, vl2, vl3):
self.fld1 = vl1
self.fld2 = vl2
self.fld3 = vl3
rc1 = slt1(4, 7)
rc2 = slt2(11, 18, 29)
print(rc1)
print(rc2)
When I call this I would expect to see the following:
### slots = ('fld1', 'fld2')
### slots = ()
4->7
### slots = (fld3,)
### slots = ('fld1', 'fld2')
### slots = ()
11->18->29
What I actually get is:
### slots = ('fld1', 'fld2')
Traceback (most recent call last):
File "slottest", line 39, in <module>
print(rc1)
File "slottest", line 15, in __str__
attrs = self.getslots()
File "slottest", line 9, in getslots
ls = super().getslots()
AttributeError: 'super' object has no attribute 'getslots'
--
Antoon Pardon
--
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