text: import iyzipay
  
  options = {
      'api_key': iyzipay.api_key,
      'secret_key': iyzipay.secret_key,
      'base_url': iyzipay.base_url
  }
  
  payment_card = {
      'cardHolderName': 'John Doe',
      'cardNumber': '5528790000000008',
      'expireMonth': '12',
      'expireYear': '2030',
      'cvc': '123',
      'registerCard': '0'
  }
  
  buyer = {
      'id': 'BY789',
      'name': 'John',
      'surname': 'Doe',
      'gsmNumber': '+905350000000',
      'email': 'email@email.com',
      'identityNumber': '74300864791',
      'lastLoginDate': '2015-10-05 12:43:35',
      'registrationDate': '2013-04-21 15:12:09',
      'registrationAddress': 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1',
      'ip': '85.34.78.112',
      'city': 'Istanbul',
      'country': 'Turkey',
      'zipCode': '34732'
  }
  
  address = {
      'contactName': 'Jane Doe',
      'city': 'Istanbul',
      'country': 'Turkey',
      'address': 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1',
      'zipCode': '34732'
  }
  
  basket_items = [
      {
          'id': 'BI101',
          'name': 'Binocular',
          'category1': 'Collectibles',
          'category2': 'Accessories',
          'itemType': 'PHYSICAL',
          'price': '0.3'
      },
      {
          'id': 'BI102',
          'name': 'Game code',
          'category1': 'Game',
          'category2': 'Online Game Items',
          'itemType': 'VIRTUAL',
          'price': '0.5'
      },
      {
          'id': 'BI103',
          'name': 'Usb',
          'category1': 'Electronics',
          'category2': 'Usb / Cable',
          'itemType': 'PHYSICAL',
          'price': '0.2'
      }
  ]
  
  request = {
      'locale': 'tr',
      'conversationId': '123456789',
      'price': '1',
      'paidPrice': '1.2',
      'currency': 'TRY',
      'installment': '1',
      'basketId': 'B67832',
      'paymentChannel': 'WEB',
      'paymentGroup': 'PRODUCT',
      "callbackUrl": "https://www.merchant.com/callback",
      'paymentCard': payment_card,
      'buyer': buyer,
      'shippingAddress': address,
      'billingAddress': address,
      'basketItems': basket_items
  }
  
  threeds_initialize = iyzipay.ThreedsInitialize().create(request, options)
  
  print(threeds_initialize.read().decode('utf-8'))
  