如何在Python中展平XML文件

Question

我可以使用用于扁平化XML文件的库或机制吗？

现有：

<A>
    <B>
        <ConnectionType>a</ConnectionType>
        <StartTime>00:00:00</StartTime>
        <EndTime>00:00:00</EndTime>
        <UseDataDictionary>N</UseDataDictionary>

期望的：

A.B.ConnectionType = a
A.B.StartTime = 00:00:00
A.B.EndTime = 00:00:00
A.B.UseDataDictionary = N

Answer 1

通过xmltodict将XML文件转换为字典，并结合此答案以使a变平dict，这应该是可能的。

例：

# Original code: https://codereview.stackexchange.com/a/21035
from collections import OrderedDict

def flatten_dict(d):
    def items():
        for key, value in d.items():
            if isinstance(value, dict):
                for subkey, subvalue in flatten_dict(value).items():
                    yield key + "." + subkey, subvalue
            else:
                yield key, value

    return OrderedDict(items())

import xmltodict

# Convert to dict
with open('test.xml', 'rb') as f:
    xml_content = xmltodict.parse(f)

# Flatten dict
flattened_xml = flatten_dict(xml_content)

# Print in desired format
for k,v in flattened_xml.items():
    print('{} = {}'.format(k,v))

输出：

A.B.ConnectionType = a
A.B.StartTime = 00:00:00
A.B.EndTime = 00:00:00
A.B.UseDataDictionary = N