Message149232
> I don't really know that much about pickle, but Antoine mentioned that 'bytearray'
> works fine going from 3.2 to 2.7. Given that, can't we just compose 'bytes' with
> 'bytearray'?
Yes, although it would only work for 2.6 and 2.7.
codecs.encode() seems to be available back to 2.4 and codecs.latin_1_encode() back to at least 2.0. They also produce more compact pickles, particularly codecs.latin_1_encode().
>>> class Bytes(bytes):
... def __reduce__(self):
... return latin_1_encode, (latin_1_decode(self),)
...
[70922 refs]
>>> pickletools.dis(pickle.dumps(Bytes(b'abc'), 2))
0: \x80 PROTO 2
2: c GLOBAL '_codecs latin_1_encode'
26: q BINPUT 0
28: X BINUNICODE 'abc'
36: q BINPUT 1
38: K BININT1 3
40: \x86 TUPLE2
41: q BINPUT 2
43: \x85 TUPLE1
44: q BINPUT 3
46: R REDUCE
47: q BINPUT 4
49: . STOP
highest protocol among opcodes = 2
Only worry is that codecs.latin_1_encode.__module__ is '_codecs', and _codecs is undocumented. |
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Date |
User |
Action |
Args |
2011-12-11 18:17:54 | sbt | set | recipients:
+ sbt, irmen, pitrou, alexandre.vassalotti, meador.inge |
2011-12-11 18:17:54 | sbt | set | messageid: <1323627474.18.0.266166234145.issue13505@psf.upfronthosting.co.za> |
2011-12-11 18:17:53 | sbt | link | issue13505 messages |
2011-12-11 18:17:53 | sbt | create | |
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