有没有办法创建 XML 元素树？
我目前正在编写一些 XSD 和 DTD 来验证一些 XML 文件，我正在手工编写它们，因为我在使用 XSD 生成器（例如 Oxygen）时有过非常糟糕的体验。
但是，我已经有一个需要执行此操作的示例 XML，并且该 XML 非常巨大，例如，我有一个包含 4312 个子元素的元素。
由于我对 XSD 生成器的体验非常糟糕，因此我想创建一种仅包含唯一标签和属性的 XML 树，这样在查看要编写的 XML 时我不必处理重复元素一个XSD。
我的意思是，我有这个 XML（由 W3 提供）：
<?xml version="1.0" encoding="UTF-8"?>
<breakfast_menu>
<food some_attribute="1.0">
<name>Belgian Waffles</name>
<price>$5.95</price>
<description>
Two of our famous Belgian Waffles with plenty of real maple syrup
</description>
<calories>650</calories>
</food>
<food>
<name>Strawberry Belgian Waffles</name>
<price>$7.95</price>
<description>
Light Belgian waffles covered with strawberries and whipped cream
</description>
<calories>900</calories>
</food>
<food>
<name>Berry-Berry Belgian Waffles</name>
<price>$8.95</price>
<description>
Belgian waffles covered with assorted fresh berries and whipped cream
</description>
<calories>900</calories>
</food>
<food>
<name>French Toast</name>
<price>$4.50</price>
<description>
Thick slices made from our homemade sourdough bread
</description>
<calories>600</calories>
<some_complex_type_element_1>
<some_simple_type_element_1>Text.</some_simple_type_element_1>
</some_complex_type_element_1>
</food>
<food>
<name>Homestyle Breakfast</name>
<price>$6.95</price>
<description>
Two eggs, bacon or sausage, toast, and our ever-popular hash browns
</description>
<calories>950</calories>
<some_simple_type_element_2>Text.</some_simple_type_element_2>
</food>
</breakfast_menu>
正如您所看到的，根元素下有 4 种类型的独特元素。
这些都是：
元素 1（有属性），
元素 2 和 3，
元素 4（有另一个复杂类型元素），
元素 5（有另一个 simpleType 元素）。
我想要实现的是此 XML 的某种树表示，但仅包含唯一元素且不包含文本。
慕的地62643121回答
-
小唯快跑啊
看看这是否满足您的需求。from simplified_scrapy import SimplifiedDoc, utilsxml = '''<?xml version="1.0" encoding="UTF-8"?><breakfast_menu> <food some_attribute="1.0"> <name>Belgian Waffles</name> <price>$5.95</price> <description> Two of our famous Belgian Waffles with plenty of real maple syrup </description> <calories>650</calories> </food> <food> <name>Strawberry Belgian Waffles</name> <price>$7.95</price> <description> Light Belgian waffles covered with strawberries and whipped cream </description> <calories>900</calories> </food> <food> <name>Berry-Berry Belgian Waffles</name> <price>$8.95</price> <description> Belgian waffles covered with assorted fresh berries and whipped cream </description> <calories>900</calories> </food> <food> <name>French Toast</name> <price>$4.50</price> <description> Thick slices made from our homemade sourdough bread </description> <calories>600</calories> <some_complex_type_element_1> <some_simple_type_element_1>Text.</some_simple_type_element_1> </some_complex_type_element_1> </food> <food> <name>Homestyle Breakfast</name> <price>$6.95</price> <description> Two eggs, bacon or sausage, toast, and our ever-popular hash browns </description> <calories>950</calories> <some_simple_type_element_2>Text.</some_simple_type_element_2> </food></breakfast_menu>'''def loop(node): para = {} for k in node: if k=='tag' or k=='html': continue para[k] = '' if para: node.setAttrs(para) # Remove attributes children = node.children if children: for c in children: loop(c) else: if node.text: node.setContent('') # Remove valuedoc = SimplifiedDoc(xml)# Remove values and attributesloop(doc.breakfast_menu)dicNode = {}for node in doc.breakfast_menu.children: key = node.outerHtml if dicNode.get(key): node.remove() # Delete duplicate else: dicNode[key] = Trueprint(doc.html)结果：<?xml version="1.0" encoding="UTF-8"?><breakfast_menu> <food some_attribute=""> <name></name> <price></price> <description></description> <calories></calories> </food> <food> <name></name> <price></price> <description></description> <calories></calories> </food> <food> <name></name> <price></price> <description></description> <calories></calories> <some_complex_type_element_1> <some_simple_type_element_1></some_simple_type_element_1> </some_complex_type_element_1> </food> <food> <name></name> <price></price> <description></description> <calories></calories> <some_simple_type_element_2></some_simple_type_element_2> </food></breakfast_menu>对于大文件，请尝试以下方法。from simplified_scrapy import SimplifiedDoc, utilsfrom simplified_scrapy.core.regex_helper import replaceRegfilePath = 'test.xml'doc = SimplifiedDoc()doc.loadFile(filePath, lineByline=True)utils.appendFile('dest.xml','<?xml version="1.0" encoding="UTF-8"?><breakfast_menu>')dicNode = {}for node in doc.getIterable('food'): key = node.outerHtml key = replaceReg(key, '>[^>]*?<', '><') key = replaceReg(key, '"[^"]*?"', '""') if not dicNode.get(key): dicNode[key] = True utils.appendFile('dest.xml', key)utils.appendFile('dest.xml', '</breakfast_menu>')
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