启动代码如下：

    2. parser.add_argument('-p', '--port', default=8080, type=int, help='port to listen on')
    3. args = parser.parse_args()
    4. port = args.port
    5. app.run(debug=True,host='0.0.0.0',port=port)

    我们启动区块链

    访问全部区块：

    1. [
    2.   {
    3.     "data": "Genesis Block",
    4.     "hash": "74eaf9085aa458f99c724583e4314b361bae60bff74e4cb82f89c9ecaa671406",
    5.     "index": 0,
    6.     "previous_hash": 0,
    7.     "timestamp": 1533634910741
    8.   },
    9.   {
    10.     "data": "hello",
    11.     "hash": "41c28040287d26d66780f1175606fbf22d6a73c11355c64ae590b32d5e22d61b",
    12.     "index": 1,
    13.     "previous_hash": "74eaf9085aa458f99c724583e4314b361bae60bff74e4cb82f89c9ecaa671406",
    15.   {
    16.     "data": "hi~",
    17.     "hash": "45aff7916c3410f9f93ac2a9dbcc24af33caa9120890ce0f1cabe02a3514b106",
    18.     "index": 2,
    19.     "previous_hash": "41c28040287d26d66780f1175606fbf22d6a73c11355c64ae590b32d5e22d61b",
    20.     "timestamp": 1533634910741
    21.   },
    22.   {
    23.     "data": "~",
    24.     "hash": "cd3d295b8c2c168830e24132f58073f2d39cee95fa6ae4d87a8be248fe8eaf3f",
    25.     "index": 3,
    26.     "previous_hash": "45aff7916c3410f9f93ac2a9dbcc24af33caa9120890ce0f1cabe02a3514b106",
    27.     "timestamp": 1533634910741
    28.   }
    29. ]

    http://localhost:9090/blocks/last

    你能得到类似的结果：

    其中index就是区块链的高度

    访问index从1～3的区块

    你能得到类似的结果：

    1. [
    2.   {
    4.     "index": 1,
    5.     "previous_hash": "d2c6ff3b8ab521d7837ac64873f7228d9f7e96ce727cec2a815d135545c65f44",
    6.     "timestamp": 1533634461058
    7.   },
    8.   {
    9.     "data": "hi~",
    10.     "hash": "ad65bd6611bb84416766f231cfc87c86c885ad4f0a12bfa002c40119abd23b23",
    11.     "index": 2,
    12.     "previous_hash": "bbea6b876254a17d03cf154821be34be2ba782500da2b9310baa9d2f08567181",
    13.     "timestamp": 1533634461058
    14.   },
    15.   {
    16.     "data": "~",
    17.     "hash": "b2bc5f8762252de051c06eccd2cadeda43a200f1e834e0033e056b341d0688d6",
    18.     "index": 3,
    19.     "previous_hash": "ad65bd6611bb84416766f231cfc87c86c885ad4f0a12bfa002c40119abd23b23",
    20.     "timestamp": 1533634461058

    访问index为2的区块

    你能得到类似的结果：