[yt-users] unpickle / load problems

[Elizabeth Tasker]

Hi Matt,

So ironically, it took me a long time to find the right combination to make this break in the test script! The fatal combination seems to be an extract region from a boolean object. 

This is the script I used:

http://paste.yt-project.org/show/3228/

It should work with any data set.

It creates 6 saved objects. Objects 1-4 work fine but 5 and 6 have the attribute error.

Elizabeth


On Mar 13, 2013, at 3:08 PM, Matthew Turk <matthewturk at gmail.com> wrote:

> Hi Elizabeth,
> 
> Okay, this seems like it's bumped up against a problem with the way yt
> handles pickles.  At some point in the reconstruction, data objects
> aren't getting separated from their parameter files.
> 
> Any chance you could make something that reproduces this on one of the
> workshop datasets?
> 
> http://yt-project.org/data/
> 
> -Matt
> 
> On Wed, Mar 13, 2013 at 3:03 PM, Elizabeth Tasker
> <tasker at astro1.sci.hokudai.ac.jp> wrote:
>> Hi,
>> 
>> I'm struggling to unpickle / load_object a previously pickled / save_object.
>> 
>> I've done:
>> 
>> pf.h.save_object(allclouds, "clouds_pyfindclouds2_yt")
>> 
>> but when I do:
>> 
>> clouds = pf.h.load_object("clouds_pyfindclouds2_yt")
>> 
>> I get:
>> 
>> AttributeError                            Traceback (most recent call last)
>> /Users/Elizabeth/yt/src/yt-hg/scripts/iyt in <module>()
>> ----> 1 execfile("cloud_surfacedensity_b.py")
>> 
>> /Users/Elizabeth/yt/src/yt-hg/scripts/iyt in <module>()
>>     13 #file.close()
>>     14
>> ---> 15 clouds = pf.h.load_object("clouds_pyfindclouds2_yt")
>> 
>> /Users/Elizabeth/yt/src/yt-hg/yt/data_objects/hierarchy.pyc in load_object(self, name)
>>    328         if obj is None:
>>    329             return
>> --> 330         obj = cPickle.loads(obj.value)
>>    331         if iterable(obj) and len(obj) == 2:
>>    332             obj = obj[1] # Just the object, not the pf
>> 
>> /Users/Elizabeth/yt/src/yt-hg/yt/data_objects/data_containers.pyc in _reconstruct_object(*args, **kwargs)
>>   4623     pf = pfs.get_pf_hash(pfid)
>>   4624     cls = getattr(pf.h, dtype)
>> -> 4625     obj = cls(*new_args)
>>   4626     obj.field_parameters.update(field_parameters)
>>   4627     return pf, obj
>> 
>> /Users/Elizabeth/yt/src/yt-hg/yt/data_objects/data_containers.pyc in __init__(self, regions, fields, pf, **kwargs)
>>   4046         self._all_overlap = []
>>   4047         self._cut_masks = {}
>> -> 4048         self._get_all_regions()
>>   4049         self._make_overlaps()
>>   4050         self._get_list_of_grids()
>> 
>> /Users/Elizabeth/yt/src/yt-hg/yt/data_objects/data_containers.pyc in _get_all_regions(self)
>>   4057             self._all_regions.append(item)
>>   4058             # So cut_masks don't get messed up.
>> -> 4059             item._boolean_touched = True
>>   4060         self._all_regions = np.unique(self._all_regions)
>>   4061
>> 
>> AttributeError: ("'tuple' object has no attribute '_boolean_touched'", <function _reconstruct_object at 0x101dcd578>, ('73850deee907adf5217f43156c5057cd', 'boolean', [(GR_Enzo2_128amr5_zeus_turb_psupp_rr_0240, AMRCylinder (GR_Enzo2_128amr5_zeus_turb_psupp_rr_0240): center=[ 16.  16.  16.], _norm_vec=[ 0.  0.  1.], _radius=7.5, _height=0.100000208264), 'NOT', (GR_Enzo2_128amr5_zeus_turb_psupp_rr_0240, AMRCylinder (GR_Enzo2_128amr5_zeus_turb_psupp_rr_0240): center=[ 16.  16.  16.], _norm_vec=[ 0.  0.  1.], _radius=4.5, _height=0.100000208264)], {'bulk_velocity': array([ 0.,  0.,  0.]), 'center': array([ 0.5,  0.5,  0.5]), 'normal': array([ 0.,  0.,  1.])}))
>> 
>> 
>> 
>> This is all on the same computer.
>> 
>> Elizabeth
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