【发布时间】：2021-10-17 17:05:52
【问题描述】：
这是一个xml文件，需要在python中解析转换成数据框，保存为csv
<?xml version="1.0" encoding="UTF-8"?>
<m2:M006 xmlns:m2="http://www.mym2.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.mym2.com http://www.mym2.com/schemas/M2RequestSchema.xsd"><M001><tkn /><m2xmlReleaseNo>020</m2xmlReleaseNo><mvmtHdr mvmtTp="CRT">
<cmt>Reduction of nominal</cmt>
</mvmtHdr><mvmtSrc>
<ctlr>SAR</ctlr>
<ctlrMvmtRef>464082138</ctlrMvmtRef>
<srcRecType>Cash Transaction</srcRecType>
<srcTransType>Reduction of Nominal</srcTransType>
</mvmtSrc><extSys>
<extSysID>SAR</extSysID>
<extSysRef>464082138</extSysRef>
</extSys><hldCpt1 amtScheme="m2">
<hldId>
<ctlrOwnr>6.00595-6</ctlrOwnr>
<ctlrAcct>6005956.6000</ctlrAcct>
<ownrRefCcy>CHF</ownrRefCcy>
<ccy>CHF</ccy>
<asst>CH0013841017</asst>
<asstIDs>
<asstRef refType="ISIN">CH0013841017</asstRef>
<asstRef refType="Valor">1384101</asstRef>
<asstRef refType="SARA">000000426547</asstRef>
</asstIDs>
<asstDetail>
<isin>CH0013841017</isin>
<type>Shares</type>
<cntry>CH/Switzerland</cntry>
<desc>Lonza Group AG Nam.</desc>
<issueCcy>CHF</issueCcy>
<latestPrc ccy="CHF">126.50</latestPrc>
<latestPrcDate>2015-04-14</latestPrcDate>
</asstDetail>
</hldId>
<effDt>2015-04-14</effDt>
<settleDt>2015-04-14</settleDt>
<qty>5000</qty>
<prc ccy="CHF">2.5</prc>
<grTrdAmt ccy="CHF">-12500</grTrdAmt>
<grAmt ccy="CHF">-12500</grAmt>
<netAmt ccy="CHF">-12500</netAmt>
</hldCpt1><hldCpt2 amtScheme="m2">
<hldId>
<ctlrOwnr>6.00595-6</ctlrOwnr>
<ctlrAcct>6005956.4000/CHF/KK</ctlrAcct>
<ccy>CHF</ccy>
<asst>CHF</asst>
<asstIDs>
<asstRef refType="CURRENCY">CHF</asstRef>
</asstIDs>
</hldId>
<effDt>2015-04-14</effDt>
<grAmt ccy="CHF">12500</grAmt>
<netAmt ccy="CHF">12500</netAmt>
</hldCpt2></M001><M001><tkn /><m2xmlReleaseNo>020</m2xmlReleaseNo><mvmtHdr mvmtTp="CCL">
<cmt>Variation Margin</cmt>
</mvmtHdr><mvmtSrc>
<ctlr>SAR</ctlr>
<ctlrMvmtRef>464068243</ctlrMvmtRef>
<srcRecType>Cash Transaction</srcRecType>
<srcTransType>Variation Margin</srcTransType>
</mvmtSrc><extSys>
<extSysID>SAR</extSysID>
<extSysRef>464068243</extSysRef>
</extSys><hldCpt1 amtScheme="m2">
<hldId>
<ctlrOwnr>6.00767-3</ctlrOwnr>
<ctlrAcct>6007673.6000</ctlrAcct>
<ownrRefCcy>EUR</ownrRefCcy>
<ccy>EUR</ccy>
<asst>73896793</asst>
<asstIDs>
<asstRef refType="Valor">73896793</asstRef>
<asstRef refType="SARA">000125009930</asstRef>
</asstIDs>
<asstDetail>
<type>Future</type>
<cntry>DE/Germany</cntry>
<desc>FGBL - BUND FUTURES Jun15 EUX</desc>
<issueCcy>EUR</issueCcy>
<latestPrc ccy="EUR">159.54</latestPrc>
<latestPrcDate>2015-04-14</latestPrcDate>
<asstDerivDetails>
<contractSize>100000</contractSize>
<expDate>2015-06-08</expDate>
<underlyingAsstIDs>
<asstRef refType="Valor">0000004209</asstRef>
</underlyingAsstIDs>
</asstDerivDetails>
</asstDetail>
</hldId>
<effDt>2015-04-14</effDt>
<settleDt>2015-04-14</settleDt>
<qty>-10</qty>
<prc ccy="EUR">989898</prc>
<grTrdAmt ccy="EUR">100</grTrdAmt>
<grAmt ccy="EUR">100</grAmt>
<netAmt ccy="EUR">100</netAmt>
</hldCpt1><hldCpt2 amtScheme="m2">
<hldId>
<ctlrOwnr>6.00767-3</ctlrOwnr>
<ctlrAcct>6007673.4004/EUR/KK 'Variation Margin'</ctlrAcct>
<ccy>EUR</ccy>
<asst>EUR</asst>
<asstIDs>
<asstRef refType="CURRENCY">EUR</asstRef>
</asstIDs>
</hldId>
<effDt>2015-04-14</effDt>
<grAmt ccy="EUR">-100</grAmt>
<netAmt ccy="EUR">-100</netAmt>
</hldCpt2></M001><M001><tkn /><m2xmlReleaseNo>020</m2xmlReleaseNo><mvmtHdr mvmtTp="AOU">
<cmt>Variation Margin</cmt>
</mvmtHdr><mvmtSrc>
<ctlr>SAR</ctlr>
<ctlrMvmtRef>464068485</ctlrMvmtRef>
<srcRecType>Cash Transaction</srcRecType>
<srcTransType>Variation Margin</srcTransType>
</mvmtSrc><extSys>
<extSysID>SAR</extSysID>
<extSysRef>464068485</extSysRef>
</extSys><hldCpt1 amtScheme="m2">
<hldId>
<ctlrOwnr>6.01279-4</ctlrOwnr>
<ctlrAcct>6012794.6000</ctlrAcct>
<ownrRefCcy>EUR</ownrRefCcy>
<ccy>CHF</ccy>
<asst>74040383</asst>
<asstIDs>
<asstRef refType="Valor">74040383</asstRef>
<asstRef refType="SARA">000125132191</asstRef>
</asstIDs>
<asstDetail>
<type>Future</type>
<cntry>CH/Switzerland</cntry>
<desc>FSMI FUTURES Jun15 EUX</desc>
<issueCcy>CHF</issueCcy>
<latestPrc ccy="CHF">9288.00</latestPrc>
<latestPrcDate>2015-04-14</latestPrcDate>
<asstDerivDetails>
<contractSize>10</contractSize>
<expDate>2015-06-19</expDate>
<underlyingAsstIDs>
<asstRef refType="Valor">0000004208</asstRef>
</underlyingAsstIDs>
</asstDerivDetails>
</asstDetail>
</hldId>
<effDt>2015-04-14</effDt>
<settleDt>2015-04-14</settleDt>
<qty>-14</qty>
<prc ccy="CHF">989898</prc>
<grTrdAmt ccy="CHF">-6440</grTrdAmt>
<grAmt ccy="CHF">-6440</grAmt>
<netAmt ccy="CHF">-6440</netAmt>
</hldCpt1><hldCpt2 amtScheme="m2">
<hldId>
<ctlrOwnr>6.01279-4</ctlrOwnr>
<ctlrAcct>6012794.4019/CHF/KK 'Variation Margin'</ctlrAcct>
<ccy>CHF</ccy>
<asst>CHF</asst>
<asstIDs>
<asstRef refType="CURRENCY">CHF</asstRef>
</asstIDs>
</hldId>
<effDt>2015-04-14</effDt>
<grAmt ccy="CHF">6440</grAmt>
<netAmt ccy="CHF">6440</netAmt>
</hldCpt2></M001></m2:M006>
要将其转换为数据框，我编写了以下代码：
import pandas as pd
import xml.etree.ElementTree as et
def parse_XML(xml_file, df_cols):
xtree = et.parse(xml_file)
xroot = xtree.getroot()
rows = []
for node in xroot:
res = []
res.append(node.attrib.get(df_cols[0]))
for el in df_cols[1:]:
if node is not None and node.find(el) is not None:
res.append(node.find(el).text)
else:
res.append(None)
rows.append({df_cols[i]: res[i]
for i, _ in enumerate(df_cols)})
out_df = pd.DataFrame(rows, columns=df_cols)
return out_df
但是数据框没有加载 错误是我无法获取标题下的值 But unable to get output 想要的输出 output wanted
【问题讨论】：
标签： python-3.x pandas xml numpy elementtree