Comments (4)
zhuyifei1999
commented on July 18, 2024
hmm. Is this how to reproduce this?
$ python
Python 3.9.9 (main, Nov 17 2021, 14:19:07)
[GCC 11.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import weakref
>>> key1 = lambda: None
>>> key2 = lambda: None
>>> obj = object()
>>> dct = {weakref.ref(key1): obj, weakref.ref(key2): obj}
>>> import guppy
>>> iso = guppy.hpy().iso(obj)
>>> del obj
>>> iso.shpaths
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/zhuyifei1999/guppy3/guppy/heapy/OutputHandling.py", line 386, in reprfunc
return self.printer.get_str_of_top()
File "/home/zhuyifei1999/guppy3/guppy/heapy/OutputHandling.py", line 272, in get_str_of_top
return self.get_str(self, True)
File "/home/zhuyifei1999/guppy3/guppy/heapy/OutputHandling.py", line 339, in get_str
return self.mod.View.enter(lambda: f())
File "/home/zhuyifei1999/guppy3/guppy/heapy/View.py", line 256, in enter
retval = func()
File "/home/zhuyifei1999/guppy3/guppy/heapy/OutputHandling.py", line 339, in <lambda>
return self.mod.View.enter(lambda: f())
File "/home/zhuyifei1999/guppy3/guppy/heapy/OutputHandling.py", line 307, in f
nxt = next(it)
File "/home/zhuyifei1999/guppy3/guppy/heapy/OutputHandling.py", line 232, in lines_from
yield self.line_at(idx)
File "/home/zhuyifei1999/guppy3/guppy/heapy/OutputHandling.py", line 212, in line_at
li = next(self.line_iter)
File "/home/zhuyifei1999/guppy3/guppy/heapy/Path.py", line 368, in _oh_get_line_iter
for el in self:
File "/home/zhuyifei1999/guppy3/guppy/heapy/Path.py", line 289, in __iter__
return self.iter()
File "/home/zhuyifei1999/guppy3/guppy/heapy/Path.py", line 292, in iter
return PathsIter(self, start, stop)
File "/home/zhuyifei1999/guppy3/guppy/heapy/Path.py", line 176, in __init__
self.reset(start)
File "/home/zhuyifei1999/guppy3/guppy/heapy/Path.py", line 209, in reset
sr = self.mod.sortedrels(self.paths.IG, src)
File "/home/zhuyifei1999/guppy3/guppy/heapy/Path.py", line 462, in sortedrels
t.sort(key=lambda x: x[0])
File "/home/zhuyifei1999/guppy3/guppy/heapy/Path.py", line 94, in __lt__
return self.r < other.r
TypeError: '<' not supported between instances of 'weakref' and 'weakref'
I think among all the relations, only dict keys can be weakrefs. I guess I could change it so that if a comparison fails, compare its id(). The problem is that in that case, say, id(1) > id('foo') and id(2) < id('foo'), it implies id(2) < id('foo') < id(1), but that would conflict with 1 < 2. I could say compare type(1) and type('foo') when the types are different, and when types are the same, try to compare directly, and if that fails with typeerror, compare id... that should work right?
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pi-no
commented on July 18, 2024
That's at least how I patched it here, and I think it was okay, but you probably know better what consequences that can have. But maybe it's not worse than crashing. :)
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zhuyifei1999
commented on July 18, 2024
Yep. 5542d9c should fix it. If dict keys have same-type-but-sometimes-compariable says, say (None,) and (1,), it might fail to have total ordering but there's not much I can do about it.
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pi-no
commented on July 18, 2024
Thanks a lot!
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