使用 ElementTree 讀取 .xml 等電子表格

Question

我正在使用 ElementTree 讀取 xml 文件，但有一個單元格無法讀取其數據。

我修改了我的文件以制作一個可重復的示例，我接下來介紹：

from xml.etree import ElementTree
import io

xmlf = """<?xml version="1.0"?>
<?mso-application progid="Excel.Sheet"?>
<Workbook ss:ResourcesPackageName="" ss:ResourcesPackageVersion="" xmlns="urn:schemas-microsoft-com:office:spreadsheet"
 xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"
 xmlns:html="http://www.w3.org/TR/REC-html40">
  <Worksheet ss:Name="DigitalOutput" ss:IsDeviceType="true">
     <Row ss:AutoFitHeight="0">
    <Cell><Data ss:Type="String">A</Data><NamedCell ss:Name="_FilterDatabase"/></Cell>
    <Cell><Data ss:Type="String">B</Data><NamedCell ss:Name="_FilterDatabase"/></Cell>
    <Cell><Data ss:Type="String">C</Data><NamedCell ss:Name="_FilterDatabase"/></Cell>
    <Cell ss:Index="7"><ss:Data ss:Type="String"
      xmlns="http://www.w3.org/TR/REC-html40"><Font html:Color="#000000">CAN'T READ </Font><Font>THIS</Font></ss:Data><NamedCell
      ss:Name="_FilterDatabase"/></Cell>
    <Cell ss:Index="10"><Data ss:Type="String">D</Data><NamedCell
      ss:Name="_FilterDatabase"/></Cell>
   </Row>
   </Worksheet>
 </Workbook>"""

---

ss = "urn:schemas-microsoft-com:office:spreadsheet"
worksheet_label = '{%s}Worksheet' % ss
row_label = '{%s}Row' % ss
cell_label = '{%s}Cell' % ss
data_label = '{%s}Data' % ss

tree = ElementTree.parse(io.StringIO(xmlf))
root = tree.getroot()

for ws in root.findall(worksheet_label):
    for table in ws.findall(row_label):
        for c in table.findall(cell_label):
            data = c.find(data_label)
            print(data.text)

輸出是：

A
B
C
None
D

因此，未讀取第四個單元格。 你能幫我解決這個問題嗎？

Answer 1

問題：使用 ElementTree 讀取 .xml 之類的電子表格

文檔： lxml.etree 教程 - 命名空間

---

1. 定義使用的namespaces

    ns = {'ss':"urn:schemas-microsoft-com:office:spreadsheet", 'html':"http://www.w3.org/TR/REC-html40" }

2. 將namespaces與find(.../findall(...

    tree = ElementTree.parse(io.StringIO(xmlf)) root = tree.getroot() for ws in root.findall('ss:Worksheet', ns): for table in ws.findall('ss:Row', ns): for c in table.findall('ss:Cell', ns): data = c.find('ss:Data', ns) if data.text is None: text = [] data = data.findall('html:Font', ns) for element in data: text.append(element.text) data_text = ''.join(text) print(data_text) else: print(data.text)

輸出：

 A B C CAN'T READ THIS D

用 Python 測試：3.5

Answer 2

第四個單元格的文本內容屬於綁定到另一個命名空間的兩個Font子元素。 演示：

for e in root.iter():
    text = e.text.strip() if e.text else None 
    if text:
        print(e, text)

輸出：

<Element {urn:schemas-microsoft-com:office:spreadsheet}Data at 0x7f8013d01dc8> A
<Element {urn:schemas-microsoft-com:office:spreadsheet}Data at 0x7f8013d01dc8> B
<Element {urn:schemas-microsoft-com:office:spreadsheet}Data at 0x7f8013d01dc8> C
<Element {http://www.w3.org/TR/REC-html40}Font at 0x7f8013d01e08> CAN'T READ
<Element {http://www.w3.org/TR/REC-html40}Font at 0x7f8013d01e48> THIS
<Element {urn:schemas-microsoft-com:office:spreadsheet}Data at 0x7f8013d01e48> D