Message351082
I failed to write a reproducer from scratch. So let me share my notes here. The first point is that remove() function of WeakValueDictionary keeps WeakValueDictionary.data alive like that:
---
class NoisyDel:
def __del__(self):
print("dealloc data dict")
def create_closure():
data = {0: NoisyDel()}
def remove():
return data
return remove
remove = create_closure()
print("clear ")
remove = None
print("exit")
---
data is only deleted once remove is cleared. |
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Date |
User |
Action |
Args |
2019-09-03 12:21:13 | vstinner | set | recipients:
+ vstinner, pitrou, christian.heimes, petr.viktorin, lukasz.langa, Mark.Shannon, jdemeyer, pablogsal |
2019-09-03 12:21:13 | vstinner | set | messageid: <1567513273.65.0.888277214763.issue38006@roundup.psfhosted.org> |
2019-09-03 12:21:13 | vstinner | link | issue38006 messages |
2019-09-03 12:21:13 | vstinner | create | |
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