larray.Session.to_pickle¶

Session.to_pickle(self, fname, names=None, overwrite=True, display=False, **kwargs)[source]¶

Dumps Array, Axis and Group objects from the current session to a file using pickle.

WARNING: never load a pickle file (.pkl or .pickle) from an untrusted source, as it can lead to arbitrary code execution.

Parameters

fnamestr: Path for the dump.
nameslist of str or None, optional: Names of Array/Axis/Group objects to dump. Defaults to all objects present in the Session.
overwrite: bool, optional: Whether or not to overwrite an existing file, if any. If False, file is updated. Defaults to True.
displaybool, optional: Whether or not to display which file is being worked on. Defaults to False.

Examples

>>> # axes
>>> a, b = Axis("a=a0..a2"), Axis("b=b0..b2")    
>>> # groups
>>> a01 = a['a0,a1'] >> 'a01'                    
>>> # arrays
>>> arr1, arr2 = ndtest((a, b)), ndtest(a)       
>>> s = Session([('a', a), ('b', b), ('a01', a01), ('arr1', arr1), ('arr2', arr2)])  
>>> # metadata
>>> s.meta.title = 'my title'                    
>>> s.meta.author = 'John Smith'                 

Save all arrays

>>> s.to_pickle('output.pkl')  

Save only some objects

>>> s.to_pickle('output.pkl', ['a', 'b', 'arr1'])  