Python 元素树:如何查找具有特定值的所有子元素
我有一个具有以下结构的XML文件:Python 元素树:如何查找具有特定值的所有子元素,python,elementtree,Python,Elementtree,我有一个具有以下结构的XML文件: <?xml version="1.0"?> <data> <product> <Product_Code>code1</Product_Code> <Size>x</Size> <Quantity>1<Quantity> </product> <product> <Product_Code&g
<?xml version="1.0"?>
<data>
<product>
<Product_Code>code1</Product_Code>
<Size>x</Size>
<Quantity>1<Quantity>
</product>
<product>
<Product_Code>code3</Product_Code>
<Size>c</Size>
<Quantity>5<Quantity>
</product>
<product>
<Product_Code>code2</Product_Code>
<Size>z</Size>
<Quantity>2<Quantity>
</product>
<product>
<Product_Code>code3</Product_Code>
<Size>a</Size>
<Quantity>1<Quantity>
</product>
<product>
<Product_Code>code1</Product_Code>
<Size>y</Size>
<Quantirt>1<Quantity>
</product>
<product>
<Product_Code>code3</Product_Code>
<Size>b</Size>
<Quantity>5<Quantity>
</product>
</data>
如果code=“code1”,我希望使用code=“code1”查找根中的所有其他元素及其相应的大小和数量值
我想生成以下XML:
<products>
<product>
<Product_Code>code1<Product_Code>
<variants>
<variant>
<size>x</size>
<quantity>1</quantity>
</variant>
<variant>
<size>y</size>
<quantity>1</quantity>
</variant>
</variants>
</product>
<product>
<Product_Code>code2<Product_Code>
<variants>
<variant>
<size>z</size>
<quantity>2</quantity>
</variant>
</variants>
</product>
<product>
<Product_Code>code3<Product_Code>
<variants>
<variant>
<size>a</size>
<quantity>1</quantity>
</variant>
<variant>
<size>b</size>
<quantity>5</quantity>
</variant>
<variant>
<size>c</size>
<quantity>5</quantity>
</variant>
</variants>
</product>
</products>
代码1
x
1.
Y
1.
代码2
Z
2.
代码3
A.
1.
B
5.
C
5.
首先,您的xml无效,请参阅不匹配的Quantity
和Quantity
标记
无论如何,以下是如何获得每个代码的所有大小:
from xml.etree import ElementTree as ET
data = """<?xml version="1.0"?>
<data>
<product>
<Product_Code>code1</Product_Code>
<Size>x</Size>
<Quantity>1</Quantity>
</product>
<product>
<Product_Code>code3</Product_Code>
<Size>c</Size>
<Quantity>5</Quantity>
</product>
<product>
<Product_Code>code2</Product_Code>
<Size>z</Size>
<Quantity>2</Quantity>
</product>
<product>
<Product_Code>code3</Product_Code>
<Size>a</Size>
<Quantity>1</Quantity>
</product>
<product>
<Product_Code>code1</Product_Code>
<Size>y</Size>
<Quantity>1</Quantity>
</product>
<product>
<Product_Code>code3</Product_Code>
<Size>b</Size>
<Quantity>5</Quantity>
</product>
</data>"""
tree = ET.fromstring(data)
codes = {}
for product in tree.findall('.//product'):
code = product.find('Product_Code').text
size = product.find('Size').text
quantity = product.find('Quantity').text
codes[code] = codes[code] if code in codes else {}
codes[code][size] = quantity
print codes
如何获得每个尺寸对应的数量。我想要
{code1:{x:1,y:1},code2:{z:2},code3:{a:1,b:5,c:5}
它有帮助,但不能有效地帮助我解决实际问题。我已更新了问题。这样,我必须首先生成字典,然后编写相应的XML。如果需要,我希望一次性完成possible@nish明白了,事实上它改变了游戏规则。我想你最初的问题已经得到了回答。我最好创建一个sepa为新任务的问题评分。谢谢。
from xml.etree import ElementTree as ET
data = """<?xml version="1.0"?>
<data>
<product>
<Product_Code>code1</Product_Code>
<Size>x</Size>
<Quantity>1</Quantity>
</product>
<product>
<Product_Code>code3</Product_Code>
<Size>c</Size>
<Quantity>5</Quantity>
</product>
<product>
<Product_Code>code2</Product_Code>
<Size>z</Size>
<Quantity>2</Quantity>
</product>
<product>
<Product_Code>code3</Product_Code>
<Size>a</Size>
<Quantity>1</Quantity>
</product>
<product>
<Product_Code>code1</Product_Code>
<Size>y</Size>
<Quantity>1</Quantity>
</product>
<product>
<Product_Code>code3</Product_Code>
<Size>b</Size>
<Quantity>5</Quantity>
</product>
</data>"""
tree = ET.fromstring(data)
codes = {}
for product in tree.findall('.//product'):
code = product.find('Product_Code').text
size = product.find('Size').text
quantity = product.find('Quantity').text
codes[code] = codes[code] if code in codes else {}
codes[code][size] = quantity
print codes
{'code1': {'y': '1', 'x': '1'}, 'code2': {'z': '2'}, 'code3': {'a': '1', 'c': '5', 'b': '5'}}