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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _combined_grouping_values(grouping_name,collection_a,collection_b):
 """ returns a dict with values from both collections for a given grouping name Warning: collection2 overrides collection1 if there is a group_key conflict """

    new_grouping= collection_a.groupings.get(grouping_name,{}).copy()
    new_grouping.update(collection_b.groupings.get(grouping_name,{}))
    return new_grouping