def merge_dictionaries(dict1,dict2):
    import collections as ct
    
    merged_dict = dict(ct.ChainMap({}, dict1, dict2))
    return merged_dict
def merge_dictionaries(dict1, VAR_0):
    import collections as ct
   
    merged_dict = dict(ct.ChainMap({}, dict1, VAR_0))
    return merged_dict