Array of hash table

[jyoti690saini at gmail.com]

Hello,

   Can any one tell me how to create 
   graph={
  "nodes": [
    {
      "id": "n0",
      "label": "A node",
      "x": 0,
      "y": 0,
      "size": 3
    },
    {
      "id": "n1",
      "label": "Another node",
      "x": 3,
      "y": 1,
      "size": 2
    },
    {
      "id": "n2",
      "label": "And a last one",
      "x": 1,
      "y": 3,
      "size": 1
    }
  ],
  "edges": [
    {
      "id": "e0",
      "source": "n0",
      "target": "n1",
      "label" : "dfghujikoi"
    },
    {
      "id": "e1",
      "label" : "dfghujikoi",
      "source": "n1",
      "target": "n2"
      
    },
    {
      "id": "e2",
      "source": "n2",
      "target": "n0",
      "label" : "dfghujikoi"
    }
  ]
}

using python?

its like a hash table and value is an array of hash table ?
I tried but it was giving error of "List out of index" .