Message108937
| Author |
belopolsky |
| Recipients |
alexandre.vassalotti, belopolsky, pitrou |
| Date |
2010年06月29日.19:28:37 |
| SpamBayes Score |
0.004602267 |
| Marked as misclassified |
No |
| Message-id |
<1277839720.0.0.346517516652.issue9120@psf.upfronthosting.co.za> |
| In-reply-to |
| Content |
Empty sets are pickled as set([]). The pickle contains serialization of an empty list that is passed to set constructor during unpickling:
>>> dis(dumps(set()))
0: \x80 PROTO 3
2: c GLOBAL 'builtins set'
16: q BINPUT 0
18: ] EMPTY_LIST
19: q BINPUT 1
21: \x85 TUPLE1
22: q BINPUT 2
24: R REDUCE
25: q BINPUT 3
27: . STOP
The proposed patch pickles empty set as set() instead:
>>> dis(dumps(set()))
0: \x80 PROTO 3
2: c GLOBAL 'builtins set'
16: q BINPUT 0
18: ) EMPTY_TUPLE
19: R REDUCE
20: q BINPUT 1
22: . STOP |
|
History
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|---|
| Date |
User |
Action |
Args |
| 2010年06月29日 19:28:40 | belopolsky | set | recipients:
+ belopolsky, pitrou, alexandre.vassalotti |
| 2010年06月29日 19:28:40 | belopolsky | set | messageid: <1277839720.0.0.346517516652.issue9120@psf.upfronthosting.co.za> |
| 2010年06月29日 19:28:38 | belopolsky | link | issue9120 messages |
| 2010年06月29日 19:28:38 | belopolsky | create |
|