rustworkx_graph_to_lists.py

def nested_dict_to_df(nested_dict):
    left = []
    right = []
    value = []
    
    for outer_key, inner_dict in nested_dict.items():
        for inner_key, val_list in inner_dict.items():
            left.append(outer_key)
            right.append(inner_key)
            value.append(list(val_list))
    
    return left, right, value