Backend Challenge - Shopify Winternship 2018

Completed by Mokai Xu

Code Reviewed by Felix Guo

Coded in Python3

Output:

{
  "invalid_customers": [
    {
      "id": 2,
      "invalid_fields": [
        "name"
      ]
    },
    {
      "id": 3,
      "invalid_fields": [
        "newsletter"
      ]
    },
    {
      "id": 5,
      "invalid_fields": [
        "name"
      ]
    },
    {
      "id": 6,
      "invalid_fields": [
        "name",
        "age"
      ]
    },
    {
      "id": 11,
      "invalid_fields": [
        "name",
        "email"
      ]
    },
    {
      "id": 15,
      "invalid_fields": [
        "newsletter"
      ]
    }
  ]
}