I wrote a simple Flask server that catches JSON data from a Post webhook and creates a sales record within Odoo v13. At the time this solution worked since my Json data only has 2 items that I needed"ItemID" and "ItemQuantity". However, now the Flask server needs to support multiple "ItemID" and "ItemQuantity". I am not sure how to best go about this.

This is the Flask server

from flask import Flask, request, abort
import xmlrpc.client


app = Flask(__name__)


# Tells the server what route and method to use
@app.route('/webhook', methods=['POST'])
def webhook():
    if request.method == 'POST':

 # Cathces the post webhook from 3D Cart and goes in, gets the product sku and the quantity. Assigns them to variables x & quantity

        content = request.json
        changetos = {'700598114683':2,
                     '763736666666':3,
                     '34232323233333':4}
        x = content[0]['OrderItemList'][0]['ItemID']
        x = changetos.get(x, x)
        quantity = content[0]['OrderItemList'][0]['ItemQuantity']
        print(content[0]['OrderItemList'][0]['ItemID'])


# Logs in to Odoo server
        url = ""
        db = "randomDB"
        username = "random"
        password = "random"

        common = xmlrpc.client.ServerProxy('{}/xmlrpc/2/common'.format(url))
        print(common.version())

        uid = common.authenticate(db, username, password, {})
        print(uid)




 # Takes variables that were saved from the JSON post webhook and plugs into the sales record

        so_id = models.execute_kw(db, uid, password, 'sale.order', 'create', [{
            'partner_id': 10,
            'order_line': [(0, 0, {'product_id':x,'product_uom_qty': quantity})]
        }])

        return '', 200
    else:
        abort(400)


if __name__ == '__main__':
    app.run()

This is the json data that will create a sales record for the first "ItemID" and "ItemQuantity", but will not create one for the second instance of "ItemID" and "ItemQuantity".

[
{
    "InvoiceNumberPrefix": "AB-",
    "InvoiceNumber": 1000,
    "OrderID": 1,
    "CustomerID": 1,
    "OrderDate": "2016-03-17T09:52:38",
    "OrderStatusID": 1,
    "LastUpdate": "2016-03-17T09:52:38",
    "UserID": "John Doe",
    "SalesPerson": "Jane Doe",
    "ContinueURL": "http://www.some-url.com",
    "BillingFirstName": "John",
    "BillingLastName": "Doe",
    "BillingCompany": "3dcart",
    "BillingAddress": "6691 Nob Hill Rd.",
    "BillingAddress2": "Suite 100",
    "BillingCity": "Tamarac",
    "BillingState": "FL",
    "BillingZipCode": "33321",
    "BillingCountry": "US",
    "BillingPhoneNumber": "800-828-6650",
    "BillingEmail": "john@doe.com",
    "BillingPaymentMethod": "Online Credit Card",
    "BillingOnLinePayment": "true",
    "BillingPaymentMethodID": "1",
    "ShipmentList": [
      {
        "ShipmentID": 1,
        "ShipmentLastUpdate": "2016-03-17T09:52:38",
        "ShipmentBoxes": 1,
        "ShipmentInternalComment": "Some comment",
        "ShipmentOrderStatus": 4,
        "ShipmentAddress": "123 Main St.",
        "ShipmentAddress2": "Apt 123",
        "ShipmentAlias": "Someone else",
        "ShipmentCity": "Tamarac",
        "ShipmentCompany": "3dcart",
        "ShipmentCost": 12.15,
        "ShipmentCountry": "US",
        "ShipmentEmail": "someone@3dcart.com",
        "ShipmentFirstName": "Someone",
        "ShipmentLastName": "Else",
        "ShipmentMethodID": 1,
        "ShipmentMethodName": "UPS Ground",
        "ShipmentShippedDate": "2016-03-17",
        "ShipmentPhone": "800-555-1212",
        "ShipmentState": "FL",
        "ShipmentZipCode": "33319",
        "ShipmentTax": 0.00,
        "ShipmentWeight": 1.25,
        "ShipmentTrackingCode": "ABC123",
        "ShipmentUserID": "John Doe",
        "ShipmentNumber": 1,
        "ShipmentAddressTypeID": 1
      },
      {
        "ShipmentID": 2,
        "ShipmentLastUpdate": "2016-03-17T09:52:38",
        "ShipmentBoxes": 1,
        "ShipmentInternalComment": "Another comment",
        "ShipmentOrderStatus": "2",
        "ShipmentAddress": "6691 Nob Hill Rd.",
        "ShipmentAddress2": "Suite 100",
        "ShipmentAlias": "John",
        "ShipmentCity": "Tamarac",
        "ShipmentCompany": "3dcart",
        "ShipmentCost": 7.83,
        "ShipmentCountry": "US",
        "ShipmentEmail": "sjohn@doe.com",
        "ShipmentFirstName": "John",
        "ShipmentLastName": "Doe",
        "ShipmentMethodID": 2,
        "ShipmentMethodName": "USPS Priority",
        "ShipmentShippedDate": "",
        "ShipmentPhone": "800-828-6650",
        "ShipmentState": "FL",
        "ShipmentZipCode": "33321",
        "ShipmentTax": 0.00,
        "ShipmentWeight": 1.25,
        "ShipmentTrackingCode": "ABC123",
        "ShipmentUserID": "John Doe",
        "ShipmentNumber": 2,
        "ShipmentAddressTypeID": 2
      }
    ],
    "OrderItemList": [
      {
        "CatalogID": 1,
        "ItemIndexID": 1,
        "ItemID": "700598114683",
        "ItemShipmentID": 1,
        "ItemQuantity": 7,
        "ItemWarehouseID": 1,
        "ItemDescription": "Sample Product",
        "ItemUnitPrice": 9.99,
        "ItemWeight": 1.25,
        "ItemOptionPrice": 0.00,
        "ItemAdditionalField1": "3dcart internal use only",
        "ItemAdditionalField2": "3dcart internal use only",
        "ItemAdditionalField3": "3dcart internal use only",
        "ItemPageAdded": "Sample-Product.html",
        "ItemDateAdded": "2016-03-17T09:52:38",
        "ItemUnitCost": 4.57,
        "ItemUnitStock": 1,
        "ItemOptions": "Comma separated list of option IDs selected when item was added to cart (example: 123,456,789)",
        "ItemCatalogIDOptions": "Comma separated list of bundled item catalog IDs (example: 123,456,789)"
      },
      {
        "CatalogID": 1,
        "ItemIndexID": 1,
        "ItemID": "763736666666",
        "ItemShipmentID": 2,
        "ItemQuantity": 5,
        "ItemWarehouseID": 1,
        "ItemDescription": "Sample Product",
        "ItemUnitPrice": 9.99,
        "ItemWeight": 1.25,
        "ItemOptionPrice": 0.00,
        "ItemAdditionalField1": "3dcart internal use only",
        "ItemAdditionalField2": "3dcart internal use only",
        "ItemAdditionalField3": "3dcart internal use only",
        "ItemPageAdded": "Sample-Product.html",
        "ItemDateAdded": "2016-03-17T09:52:38",
        "ItemUnitCost": 1.1,
        "ItemUnitStock": 1,
        "ItemOptions": "Comma separated list of option IDs selected when item was added to cart (example: 123,456,789)",
        "ItemCatalogIDOptions": "Comma separated list of bundled item catalog IDs (example: 123,456,789)"
      }
    ],
    "OrderDiscount": 0.00,
    "SalesTax": 0.00,
    "SalesTax2": 0.00,
    "SalesTax3": 0.00,
    "OrderAmount": 39.96,
    "AffiliateCommission": 0.00,
    "TransactionList": [
      {
        "TransactionIndexID": 1,
        "OrderID": 22517,
        "TransactionID": "123XXX123",
        "TransactionDateTime": "2016-03-17T09:52:38",
        "TransactionType": "Authorize",
        "TransactionMethod": "AUTHORIZENET",
        "TransactionAmount": 10.99,
        "TransactionApproval": "SXLXXX",
        "TransactionReference": "rlsjSskdjDD/RpGDKHndihdnD",
        "TransactionGatewayID": 1,
        "TransactionCVV2": "CVVRESPONSE",
        "TransactionAVS": "AVSRESPONSE",
        "TransactionResponseText": "Transaction Response Text",
        "TransactionResponseCode": "Transaction Response Code",
        "TransactionCaptured": 1
      },
      {
        "TransactionIndexID": 1,
        "OrderID": 22517,
        "TransactionID": "123XXX123",
        "TransactionDateTime": "2016-03-17T09:52:38",
        "TransactionType": "Authorize",
        "TransactionMethod": "AUTHORIZENET",
        "TransactionAmount": 10.99,
        "TransactionApproval": "SXLXXX",
        "TransactionReference": "rlsjSskdjDD/RpGDKHndihdnD",
        "TransactionGatewayID": 1,
        "TransactionCVV2": "CVVRESPONSE",
        "TransactionAVS": "AVSRESPONSE",
        "TransactionResponseText": "Transaction Response Text",
        "TransactionResponseCode": "Transaction Response Code",
        "TransactionCaptured": 1
      }
    ],
    "CardType": "Visa",
    "CardNumber": "XXXXXXXXXXXX1111",
    "CardName": "John Doe",
    "CardExpirationMonth": "09",
    "CardExpirationYear": "2019",
    "CardIssueNumber": "XXXXXXXXXXXX1111",
    "CardStartMonth": "01",
    "CardStartYear": "1999",
    "CardAddress": "123 Anywhere St., Small Town, 33333",
    "CardVerification": "123",
    "RewardPoints": "",
    "QuestionList": 
    [
      {
        "OrderID": 1,
        "QuestionID": 1,
        "QuestionTitle": "Security Question",
        "QuestionAnswer": "Cat/Dog",
        "QuestionType": "checkbox",
        "QuestionCheckoutStep": 1,
        "QuestionSorting": 1,
        "QuestionDiscountGroup": 1
      },
      {
        "OrderID": 1,
        "QuestionID": 1,
        "QuestionTitle": "Verification Question",
        "QuestionAnswer": "Wet/Dry",
        "QuestionType": "checkbox",
        "QuestionCheckoutStep": 1,
        "QuestionSorting": 1,
        "QuestionDiscountGroup": 1
      }
    ],
    "Referer": "Google",
    "IP": "123.456.789",
    "CustomerComments": "Customer comments at checkout",
    "InternalComments": "Comments added to the order by the merchant",
    "ExternalComments": "Comments by the merchant that the customer can see"
  }
]

Not sure how to best go about this. I have tried using loops but have not had any success