How to use the mercadopago.MP function in mercadopago

def test_long_live_access_token(self):

    if not ll_access_token is None:

      preference = {
        "items": [
          {
            "title": "sdk-python test_long_live_access_token",
            "quantity": 1,
            "currency_id": "ARS",
            "unit_price": 10.5
          }
        ]
      }

      mp = mercadopago.MP(ll_access_token)

      self.assertEquals(mp.preference.create(preference)["status"], 201)

      print("test_long_live_access_token OK!")

    else:
      print("test_long_live_access_token (NOT EXECUTED)")

def test_update_preference(self):

    preference = {
      "items": [
        {
          "title": "sdk-python",
          "quantity": 1,
          "currency_id": "ARS",
          "unit_price": 10.5
        }
      ]
    }

    mp = mercadopago.MP(client_id, client_secret)

    create_preference_result = mp.preference.create(preference)

    self.assertEquals(create_preference_result["status"], 201)

    created_preference_id = create_preference_result["response"]["id"]

    preference_update = {
      "items": [
        {
          "title": "sdk-python rules!",
          "quantity": 2,
          "currency_id": "ARS",
          "unit_price": 19.99
        }
      ]

def test_get_preference(self):

    preference = {
      "items": [
        {
          "title": "sdk-python",
          "quantity": 1,
          "currency_id": "ARS",
          "unit_price": 10.5
        }
      ]
    }

    mp = mercadopago.MP(client_id, client_secret)

    create_preference_result = mp.preference.create(preference)

    #print(create_preference_result)

    self.assertEquals(create_preference_result["status"], 201)

    created_preference_id = create_preference_result["response"]["id"]

    get_preference_result = mp.preference.get(created_preference_id)

    self.assertEquals(get_preference_result["status"], 200)

    obtained_preference = get_preference_result["response"]

    self.assertEquals(obtained_preference["items"][0]["title"], "sdk-python")

preapprovalPayment = {
        "payer_email": "my_customer@my_site.com",
        "back_url": "http://www.my_site.com",
        "reason": "Monthly subscription to premium package",
        "external_reference": "OP-1234",
        "auto_recurring": {
            "frequency": 1,
            "frequency_type": "months",
            "transaction_amount": 60,
            "currency_id": "BRL",
            "start_date": "2012-12-10T14:58:11.778-03:00",
            "end_date": "2013-06-10T14:58:11.778-03:00"
        }
    }

    mp = mercadopago.MP("CLIENT_ID", "CLIENT_SECRET")

    preapprovalPaymentResult = mp.create_preapproval_payment(preapprovalPayment)

    url = preapprovalPaymentResult["response"]["init_point"]

    output = """
    
    
        
            <title>MercadoPago SDK - Create Preapproval Payment and Show Subscription Example</title>
        
      
        <a class="blue-l-arall-rn" name="MP-Checkout" href="{url}">Pagar</a>
        
      

def index(req, **kwargs):
    # Create an instance with your MercadoPago credentials (CLIENT_ID and CLIENT_SECRET): 
    # Argentina: https://www.mercadopago.com/mla/herramientas/aplicaciones 
    # Brasil: https://www.mercadopago.com/mlb/ferramentas/aplicacoes
    mp = mercadopago.MP("CLIENT_ID", "CLIENT_SECRET")
    
    filters = {
        "external_reference": "Bill001"
    }

    # Search payment data according to filters
    searchResult = mp.payment.search(filters)
    
    # Show payment information
    output = """
    
    
        
            <title>Search payments</title>