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https://issues.apache.org/jira/browse/THRIFT-3388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15009627#comment-15009627
]
Hudson commented on THRIFT-3388:
--------------------------------
SUCCESS: Integrated in Thrift #1732 (See
[https://builds.apache.org/job/Thrift/1732/])
THRIFT-3388 hash doesn't work on set/list Client: Python Patch: Jens (jensg:
rev 341390c19a4f559ddf9f64e5189ec103890ed239)
* compiler/cpp/src/generate/t_py_generator.cc
> hash doesn't work on set/list
> -----------------------------
>
> Key: THRIFT-3388
> URL: https://issues.apache.org/jira/browse/THRIFT-3388
> Project: Thrift
> Issue Type: Bug
> Components: Python - Compiler
> Affects Versions: 0.9.3
> Environment: ubuntu 14.04 python 2.6.9
> Reporter: Michi Mutsuzaki
> Assignee: Jens Geyer
> Fix For: 1.0
>
> Attachments: THRIFT-3388-hash-doesn-t-work-on-set-list.patch
>
>
> THRIFT-2621 added hash function to thrift generated classes, but certain
> types like set or list cannot be hashed. One solution is to convert them to
> immutable types (fronzenset, tuple) before calling hash() on them.
> {noformat}
> $ thrift -version
> Thrift version 0.9.3
> $ cat test.thrift
> struct Test {
> 1: required set<string> test
> }
> $ thrift --gen py -out . test.thrift
> $ cat test.py
> from test.ttypes import Test
> from thrift.protocol import TBinaryProtocol
> from thrift.transport import TTransport
> # serialize
> t = Test(test=set(["a"]))
> tout = TTransport.TMemoryBuffer()
> pout = TBinaryProtocol.TBinaryProtocol(tout)
> t.write(pout)
> # deserialize
> tin = TTransport.TMemoryBuffer(tout.getvalue())
> pin = TBinaryProtocol.TBinaryProtocol(tin)
> t2 = Test()
> t2.read(pin)
> # put the deserialized object to a set
> a = set([t2])
> $ python test.py
> Traceback (most recent call last):
> File "test.py", line 18, in <module>
> a = set([t2])
> File "/tmp/test/test/ttypes.py", line 81, in __hash__
> value = (value * 31) ^ hash(self.test)
> TypeError: unhashable type: 'set'
> {noformat}
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