[ros-users] rospy.Time not meant to be pickle-able in Python?

Hai Nguyen haidai at gmail.com
Fri Jul 23 06:05:05 UTC 2010


Cool! Glad it's not because I'm coding at 2AM.

On Fri, Jul 23, 2010 at 2:01 AM, Ken Conley <kwc at willowgarage.com> wrote:
> It definitely wasn't there before, but with r10481 it's there now.
> Thanks for the report.
>
>  - Ken
>
> On Thu, Jul 22, 2010 at 10:51 PM, Hai Nguyen <haidai at gmail.com> wrote:
>> Hi,
>>
>> I'm writing a simple script that receives messages from a bag file and
>> tries to pickle them.  It looks like the pickle module doesn't like
>> the roslib.time.Time class that's in header.stamp on some of the
>> messages and exits with the error:
>> "TypeError: a class that defines __slots__ without defining
>> __getstate__ cannot be pickled"
>>
>> I feel like I must have pickled a message with a header.stamp field in
>> the past.  Is this a recent change or am I mistaken?
>>
>> --
>> Hai Nguyen
>> CS, Robotics
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>>
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-- 
Hai Nguyen
CS, Robotics



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