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  • TODO: xray objects support the pickle protocol · 4 ✖
id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
40851507 https://github.com/pydata/xarray/issues/24#issuecomment-40851507 https://api.github.com/repos/pydata/xarray/issues/24 MDEyOklzc3VlQ29tbWVudDQwODUxNTA3 shoyer 1217238 2014-04-18T22:54:47Z 2014-04-18T22:54:47Z MEMBER

Some investigation reveals that this is only an issue when pickling datasets containing netCDF4.Variable objects (not xray.Variable objects). So the simple fix should be to make sure that all values are loaded into memory before pickling an xray.Variable.

 
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   TODO: xray objects support the pickle protocol 28375722
36187358 https://github.com/pydata/xarray/issues/24#issuecomment-36187358 https://api.github.com/repos/pydata/xarray/issues/24 MDEyOklzc3VlQ29tbWVudDM2MTg3MzU4 shoyer 1217238 2014-02-26T22:43:49Z 2014-02-26T22:43:49Z MEMBER

Something to consider is whether we should always store the data as an ndarray before pickling an XArray, or whether we should just store a reference to the original sources (e.g., make a pickle-able version of netCDF4.Variable). I am inclined to the former so pickle can be used a simple serialization format, but Iris has implemented the later approach.

 
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   TODO: xray objects support the pickle protocol 28375722
36186341 https://github.com/pydata/xarray/issues/24#issuecomment-36186341 https://api.github.com/repos/pydata/xarray/issues/24 MDEyOklzc3VlQ29tbWVudDM2MTg2MzQx ebrevdo 1794715 2014-02-26T22:33:31Z 2014-02-26T22:39:49Z CONTRIBUTOR

``` In [73]: h = cPickle.dumps(f)

TypeError Traceback (most recent call last) <ipython-input-73-a875f963f7d4> in <module>() ----> 1 h = cPickle.dumps(f)

/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/copy_reg.pyc in _reduce_ex(self, proto) 68 else: 69 if base is self.class: ---> 70 raise TypeError, "can't pickle %s objects" % base.name 71 state = base(self) 72 args = (self.class, base, state)

TypeError: can't pickle Variable objects ```

 
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   TODO: xray objects support the pickle protocol 28375722
36186641 https://github.com/pydata/xarray/issues/24#issuecomment-36186641 https://api.github.com/repos/pydata/xarray/issues/24 MDEyOklzc3VlQ29tbWVudDM2MTg2NjQx ebrevdo 1794715 2014-02-26T22:36:42Z 2014-02-26T22:36:42Z CONTRIBUTOR 
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   TODO: xray objects support the pickle protocol 28375722

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