Question

所以我是使用Python进行xml解析的新手，并且遇到以下问题：

我正在搜索特定标记并将其值存储到列表中，然后将其写入csv文件。

带有文本的值存储得很好，但似乎带有数字的值失败并出现以下错误：

Traceback (most recent call last):
File "C:\Desktop\IDLE - Copy.py", line 19, in <module>
Qty = things.find('PosQuantityAmt', root.nsmap).text
AttributeError: 'NoneType' object has no attribute 'text'

但是，当我只打印完全相同的行时：

print(things.find('PosQuantityAmt', root.nsmap).text)

我得到的价值很好......

8400.0000
15666.0000
75.0000
135697.0000
4528.0000
3224.0000
21352.0000
9734.0000
352000.0000
732.0000
2539.0000
37.7370
21007.6700
60.0000
1100.0000
59877.3300
30000.0000
30000.0000
30000.0000
30000.0000
30000.0000

这是我的代码：

from lxml import etree
import csv

tree = etree.parse('C:/Desktop/ECDS_POS.xml')
root = tree.getroot()

f = open('C:/Desktop/test.csv', 'w')
csvwriter = csv.writer(f)

head = ['Port Code','ISIN','Qty','Cost']
csvwriter.writerow(head)


for things in root.findall('ROW', root.nsmap):
    lists = []

    portcode = things.find('CustId',root.nsmap).text

    Qty = things.find('PosQuantityAmt', root.nsmap).text

    ISIN = things.find('PosSecIsin', root.nsmap).text

    cost = things.find('PosCostPriceAmt', root.nsmap).text

    lists.append(portcode + ";" + Qty + ";" + ISIN + ";" + cost )
    csvwriter.writerow(lists)

f.close()

xml文件的片段：

    <?xml version="1.0"?>

-<ECDS RowCount="392" ToDate="2017-10-02" FromDate="2017-10-02" Table="POS" ExtractionTime="2017-10-25T17:44:27" 
xmlns="https://cnchedwsvcp01/ecds/pos/1">

-<ROW>

<EntityCod>BZH</EntityCod>

<CustId>707144</CustId>

<PortfId>707144-1</PortfId>

<PosId>SC.707144-1.277639-600.590084....</PosId>

<SystemIdCod>SC</SystemIdCod>

<PosHfmCod>550 05</PosHfmCod>

<PosHfmDsc>Equities</PosHfmDsc>

<PosNameTxt>Hochschild Mining PLC Hochschild Mini/RegSh GBP0.25</PosNameTxt>

<PosValuationDat>2017-10-02</PosValuationDat>

<PosPriceAmt>2.2490</PosPriceAmt>

<PosCcyCod>GBP</PosCcyCod>

<PosPriceTypeCod>0</PosPriceTypeCod>

<PosPriceTypeDsc>UNIT PRICE</PosPriceTypeDsc>

<PosEstimAmt>18891.6000</PosEstimAmt>

<PosEstimRefAmt>25062.4000</PosEstimRefAmt>

<PosEstimRefCcyCod>USD</PosEstimRefCcyCod>

<PosRefRateAmt>0.7537</PosRefRateAmt>

<PosQuantityAmt>8400.0000</PosQuantityAmt>

<PosSecId>277639-600</PosSecId>

<PosSecIsin>GB00B1FW5029</PosSecIsin>

<PosValorenId>2776396</PosValorenId>

<PosSubAssetTypeCod>101</PosSubAssetTypeCod>

<PosSubAssetTypeDsc>EQUITIES</PosSubAssetTypeDsc>

<PosPriceDat>2017-10-24</PosPriceDat>

<XrGroupDsc>EQUITIES</XrGroupDsc>

<XrGroupId>2</XrGroupId>

<PosContractSizeAmt>1</PosContractSizeAmt>

<PosCostEstimAmt>22675.9500</PosCostEstimAmt>

<PosCostEstimRefAmt>30386.3800</PosCostEstimRefAmt>

<PosCostPriceAmt>2.6995</PosCostPriceAmt>

<PosCostPriceRefAmt>3.6176</PosCostPriceRefAmt>

<PosCostPriceRefRateAmt>0.7462</PosCostPriceRefRateAmt>

<PosAssetTypeCod>10</PosAssetTypeCod>

<PosAssetTypeDsc>SHARES</PosAssetTypeDsc>

</ROW>

lxml解析器无法在变量中存储文本

0 个答案: