Python 附加到字典中的列表

目标：将

值['itemArray']

中的项目附加到

产品['items']

-请参见函数

fba\u订单

问题：当前代码仅将

值['itemArray']

的最后一项附加到

产品['Items']

电流输出：

{'Items': [{'SellerFulfillmentOrderItemId': 266804219, 'SellerSKU': 'IX-GZ31-31K6', 'Quantity': 1}, {'SellerFulfillmentOrderItemId': 266804219, 'SellerSKU': 'IX-GZ31-31K6', 'Quantity': 1}]}

正确的输出是：

{'Items': [{'SellerFulfillmentOrderItemId': 266804218, 'SellerSKU': 'KM-090914-840-BEARLAPTOP', 'Quantity': 1}, {'SellerFulfillmentOrderItemId': 266804219, 'SellerSKU': 'IX-GZ31-31K6', 'Quantity': 1}]}

代码：

---

您正在反复使用

项所引用的词典

；附加这一本词典不会创建新的副本。相反，您正在向该词典添加多个引用。当您继续修改字典时，所有这些引用都将显示这些更改

最好为每个循环迭代生成一个全新的字典：

for items in VALUE['itemArray']:
    item = {
        'Quantity': items['item']['quantity'],
        'SellerFulfillmentOrderItemId': items['item']['itemID']
        'SellerSKU': items['item']['sk'],
    }
    products['Items'].append(item)

---

问题在于，您正在为

for

循环之外创建项，然后只是更改for循环内的值并将其附加到列表中

字典是参考，因此即使在添加到

产品['Items']

列表后，如果更改

项目

字典，它也会更改添加到列表的

项目

您想将

项初始化为
for
循环中的一个新字典

范例-

def fba_order():
    address = {}
    products = {'Items': []}
    Items = []
    address['City'] = VALUE['shippingAddress']['cityName']
    address['CountryCode'] = VALUE['shippingAddress']['country']
    address['Line1'] = VALUE['shippingAddress']['street1']
    address['Line2'] = VALUE['shippingAddress']['street2']
    address['Name'] = VALUE['shippingAddress']['name']
    address['PostalCode'] = VALUE['shippingAddress']['postalCode']
    address['StateOrProvinceCode'] = VALUE['shippingAddress']['stateOrProvince']
    for items in VALUE['itemArray']:
        item = {}
        item['Quantity'] = items['item']['quantity']
        item['SellerFulfillmentOrderItemId'] = items['item']['itemID']
        item['SellerSKU'] = items['item']['sk']
        products['Items'].append(item)
        continue
    print address, '\n', products

项
是dict对象。将相同的
项
对象附加两次。您应该在
中为
启动
item={}
，谢谢您。。。这让我发疯
def fba_order():
    address = {}
    products = {'Items': []}
    Items = []
    address['City'] = VALUE['shippingAddress']['cityName']
    address['CountryCode'] = VALUE['shippingAddress']['country']
    address['Line1'] = VALUE['shippingAddress']['street1']
    address['Line2'] = VALUE['shippingAddress']['street2']
    address['Name'] = VALUE['shippingAddress']['name']
    address['PostalCode'] = VALUE['shippingAddress']['postalCode']
    address['StateOrProvinceCode'] = VALUE['shippingAddress']['stateOrProvince']
    for items in VALUE['itemArray']:
        item = {}
        item['Quantity'] = items['item']['quantity']
        item['SellerFulfillmentOrderItemId'] = items['item']['itemID']
        item['SellerSKU'] = items['item']['sk']
        products['Items'].append(item)
        continue
    print address, '\n', products