问题描述
我正在使用以下代码片段读取下面所示的示例xmlTest1.xml文件。
with open("xmlTest1.xml") as xml_file:
xml_dict = xmltodict.parse(xml_file.read(),force_list={'team'},attr_prefix="")
xml_file.close()
xml_file_unparsed = xmltodict.unparse(xml_dict,pretty=True,cdata_key='#text',full_document=False,short_empty_elements=True)
print ("Round trip xml file is: ",xml_file_unparsed)
阅读parse（）之后，我先执行unparse（），然后执行未解析内容的print（）。未解析的文件与原始XML文件不同。我需要unparsed（）文件与输入相同。
为什么会发生这种情况，我该如何纠正？？
在这里很迷路。请帮忙。
<?xml version="1.0" encoding="UTF-8"?>
<nba>
<date year="2020" month="10" date="7" day="3"/>
<time hour="1" minute="08" second="52" timezone="Eastern" utc-hour="-4" utc-minute="00"/>
<version number="4"/>
<league global-id="1" name="National Basketball Assoc." alias="NBA" display-name=""/>
<season season="2019"/>
<conference id="1" label="Eastern">
<division id="1" label="Atlantic">
<team global-id="2" id="2" city="Boston" name="Celtics" alias="Bos" arena-id="2" arena-name="TD Garden"/>
<team global-id="17" id="17" city="brooklyn" name="Nets" alias="Bkn" arena-id="10615" arena-name="Barclays Center"/>
<team global-id="18" id="18" city="New York" name="Knicks" alias="NY" arena-id="18" arena-name="Madison Square Garden"/>
<team global-id="20" id="20" city="Philadelphia" name="76ers" alias="Phi" arena-id="20" arena-name="Wells Fargo Center"/>
<team global-id="28" id="28" city="Toronto" name="Raptors" alias="Tor" arena-id="28" arena-name="Scotiabank Arena"/>
</division>
</conference>
</nba>
Output of unparse():
<nba>
<date>
<year>2020</year>
<month>10</month>
<date>7</date>
<day>3</day>
</date>
<time>
<hour>1</hour>
<minute>08</minute>
<second>52</second>
<timezone>Eastern</timezone>
<utc-hour>-4</utc-hour>
<utc-minute>00</utc-minute>
</time>
<version>
<number>4</number>
</version>
<league>
<global-id>1</global-id>
<name>National Basketball Assoc.</name>
<alias>NBA</alias>
<display-name/>
</league>
<season>
<season>2019</season>
</season>
<conference>
<id>1</id>
<label>Eastern</label>
<division>
<id>1</id>
<label>Atlantic</label>
<team>
<global-id>2</global-id>
<id>2</id>
<city>Boston</city>
<name>Celtics</name>
<alias>Bos</alias>
<arena-id>2</arena-id>
<arena-name>TD Garden</arena-name>
</team>
<team>
<global-id>17</global-id>
<id>17</id>
<city>brooklyn</city>
<name>Nets</name>
<alias>Bkn</alias>
<arena-id>10615</arena-id>
<arena-name>Barclays Center</arena-name>
</team>
<team>
<global-id>18</global-id>
<id>18</id>
<city>New York</city>
<name>Knicks</name>
<alias>NY</alias>
<arena-id>18</arena-id>
<arena-name>Madison Square Garden</arena-name>
</team>
<team>
<global-id>20</global-id>
<id>20</id>
<city>Philadelphia</city>
<name>76ers</name>
<alias>Phi</alias>
<arena-id>20</arena-id>
<arena-name>Wells Fargo Center</arena-name>
</team>
<team>
<global-id>28</global-id>
<id>28</id>
<city>Toronto</city>
<name>Raptors</name>
<alias>Tor</alias>
<arena-id>28</arena-id>
<arena-name>Scotiabank Arena</arena-name>
</team>
</division>
</conference>
</nba>
解决方法
此处设置了attr_prefix=""，因此xmltodict调用unparse时无法识别属性（默认设置为attr_prefix="@"）
只需将其删除，就可以了：
with open("xmlTest1.xml") as xml_file:
xml_dict = xmltodict.parse(xml_file.read(),force_list={'team'})
xml_file.close()
xml_file_unparsed = xmltodict.unparse(xml_dict,pretty=True,cdata_key='#text',full_document=False,short_empty_elements=True)
print ("Round trip xml file is: ",xml_file_unparsed)