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[ @ s$ d Z dZdd Zdd Zdd ZdS ) z7Compute a resolution order for an object and its bases
Zrestructuredtextc C sL i }g }x>t | D ]2}x,t |D ] }||kr d||< |jd| q W qW |S )a Merge multiple orderings so that within-ordering order is preserved
Orderings are constrained in such a way that if an object appears
in two or more orderings, then the suffix that begins with the
object must be in both orderings.
For example:
>>> _mergeOrderings([
... ['x', 'y', 'z'],
... ['q', 'z'],
... [1, 3, 5],
... ['z']
... ])
['x', 'y', 'q', 1, 3, 5, 'z']
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c C s6 | g}d}x&t |D ]} |d7 }| j|||< qW |S )Nr r )iter __bases__)obr ir r r _flatten/ s r c C s t t| gS )z/Compute a "resolution order" for an object
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