在我尝试通过for循环运行脚本之前，脚本的所有操作都可以正常运行。具体来说，当我尝试索引对象内的特定数组时。在开始之前，该脚本旨在获取列表中每个跟踪号的交货日期。
这是我的脚本：
import requests
import json
TrackList = ['1Z3X756E0310496105','1ZX0373R0303581450','1ZX0373R0103574417']
url = 'https://onlinetools.ups.com/rest/Track'
para1 = '...beginning of JSON request string...'
para2 = '...end of JSON request string...'
for TrackNum in TrackList:
parameters = para1+TrackNum+para2
resp = requests.post(url = url, data = parameters, verify=False)
data = json.loads(resp.text)
DelDate = data['TrackResponse']['Shipment']['Package'][0]['Activity'][0]['Date']
print(DelDate)
JSON API响应（如果需要）：
{
"TrackResponse": {
"Response": {
"ResponseStatus": {
"Code": "1",
"Description": "Success"
},
"TransactionReference": {
"CustomerContext": "Analytics Inquiry"
}
},
"Shipment": {
"InquiryNumber": {
"Code": "01",
"Description": "ShipmentIdentificationNumber",
"Value": "1ZX0373R0103574417"
},
"Package": {
"Activity": [
{
"ActivityLocation": {
"Address": {
"City": "OKLAHOMA CITY",
"CountryCode": "US",
"PostalCode": "73128",
"StateProvinceCode": "OK"
},
"Code": "M3",
"Description": "Front Desk",
"SignedForByName": "CUMMINGS"
},
"Date": "20190520",
"Status": {
"Code": "9E",
"Description": "Delivered",
"Type": "D"
},
"Time": "091513"
},
{
"ActivityLocation": {
"Address": {
"City": "Oklahoma City",
"CountryCode": "US",
"StateProvinceCode": "OK"
},
"Description": "Front Desk"
},
"Date": "20190520",
"Status": {
"Code": "OT",
"Description": "Out For Delivery Today",
"Type": "I"
},
"Time": "085943"
},
{
"ActivityLocation": {
"Address": {
"City": "Oklahoma City",
"CountryCode": "US",
"StateProvinceCode": "OK"
},
"Description": "Front Desk"
},
"Date": "20190520",
"Status": {
"Code": "DS",
"Description": "Destination Scan",
"Type": "I"
},
"Time": "011819"
},
{
"ActivityLocation": {
"Address": {
"City": "Oklahoma City",
"CountryCode": "US",
"StateProvinceCode": "OK"
},
"Description": "Front Desk"
},
"Date": "20190519",
"Status": {
"Code": "AR",
"Description": "Arrival Scan",
"Type": "I"
},
"Time": "235100"
},
{
"ActivityLocation": {
"Address": {
"City": "DFW Airport",
"CountryCode": "US",
"StateProvinceCode": "TX"
},
"Description": "Front Desk"
},
"Date": "20190519",
"Status": {
"Code": "DP",
"Description": "Departure Scan",
"Type": "I"
},
"Time": "195500"
},
{
"ActivityLocation": {
"Address": {
"City": "DFW Airport",
"CountryCode": "US",
"StateProvinceCode": "TX"
},
"Description": "Front Desk"
},
"Date": "20190517",
"Status": {
"Code": "OR",
"Description": "Origin Scan",
"Type": "I"
},
"Time": "192938"
},
{
"ActivityLocation": {
"Address": {
"CountryCode": "US"
},
"Description": "Front Desk"
},
"Date": "20190517",
"Status": {
"Code": "MP",
"Description": "Order Processed: Ready for UPS",
"Type": "M"
},
"Time": "184621"
}
],
"PackageWeight": {
"UnitOfMeasurement": {
"Code": "LBS"
},
"Weight": "2.00"
},
"ReferenceNumber": [
{
"Code": "01",
"Value": "8472745558"
},
{
"Code": "01",
"Value": "5637807:1007379402:BN81-17077A:1"
},
{
"Code": "01",
"Value": "5637807"
}
],
"TrackingNumber": "1ZX0373R0103574417"
},
"PickupDate": "20190517",
"Service": {
"Code": "001",
"Description": "UPS Next Day Air"
},
"ShipmentAddress": [
{
"Address": {
"AddressLine": "S 600 ROYAL LN",
"City": "COPPELL",
"CountryCode": "US",
"PostalCode": "750193827",
"StateProvinceCode": "TX"
},
"Type": {
"Code": "01",
"Description": "Shipper Address"
}
},
{
"Address": {
"City": "OKLAHOMA CITY",
"CountryCode": "US",
"PostalCode": "73128",
"StateProvinceCode": "OK"
},
"Type": {
"Code": "02",
"Description": "ShipTo Address"
}
}
],
"ShipmentWeight": {
"UnitOfMeasurement": {
"Code": "LBS"
},
"Weight": "2.00"
},
"ShipperNumber": "X0373R"
}
}
}
以下是我收到的错误：
Traceback (most recent call last):
File "/Users/***/Library/Preferences/PyCharmCE2019.1/scratches/UPS_API.py", line 15, in <module>
DelDate = data['TrackResponse']['Shipment']['Package'][0]['Activity'][0]['Date']
KeyError: 0
答案 0 :(得分：4)
您试图在索引0处索引“包”，但这是一个对象而不是数组。因此，您应该访问['Package']['Activity']
答案 1 :(得分：0)
因为没有[1]或[2]，所以只需带走[0]