Python 使用cElementTree传递attrib kwarg时不一致

根据说明，

Element（）

的接口采用

attrib

关键字参数

class xml.etree.ElementTree.Element(tag, attrib={}, **extra)

下面将对此进行解释

现在，正如使用Python2.7和ElementTree所描述的，这对我来说是可行的。比如说

>>> import xml.etree.ElementTree as ET
>>> parent = ET.Element("parent")
>>> attribs = {'age': '20', 'name': 'Steve'}
>>> child = ET.SubElement(parent, "child", attrib=attribs)
>>> ET.dump(parent)
<parent><child age="20" name="Steve" /></parent>

我错过了什么？有趣的是，如果我只是将

attribs

字典作为位置参数传递，cElementTree代码就可以正常工作

>>> import xml.etree.cElementTree as ET
>>> parent = ET.Element("parent")
>>> attribs = {'age': '20', 'name': 'Steve'}
>>> child = ET.SubElement(parent, "child", attribs)
>>> ET.dump(parent)
<parent><child age="20" name="Steve" /></parent>

>将xml.etree.cElementTree作为ET导入
>>>父元素=等元素（“父元素”）
>>>attribs={'age'：'20'，'name'：'Steve'}
>>>child=ET.SubElement（父，“子”，属性）
>>>ET.dump（父级）

---

我发现了一个与此相关的解决方案，但它以一个不会修复的解决方案结束。为什么C实现的行为不同？有没有关于这方面的文件我错过了。谢谢

这不是一个解决方案，而是相关的：它只是一个直接的实现差异，在Python 2.7中被列为一个bug，但在3.x中被认为是固定的。您发布的bug中的“无法修复”很可能纯粹是由于放弃了对Python2.5的支持。感谢链接Alok-这现在更有意义了，并确认它是2.7中的bug。

File "attrib.py", line 17, in <module>
  ET.dump(parent)
File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1165, in dump
  elem.write(sys.stdout)
File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 821, in write
  serialize(write, self._root, encoding, qnames, namespaces)
File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 940, in _serialize_xml
  _serialize_xml(write, e, encoding, qnames, None)
File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 933, in _serialize_xml
  v = _escape_attrib(v, encoding)
File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1093, in _escape_attrib
  _raise_serialization_error(text)
File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1053, in _raise_serialization_error
  "cannot serialize %r (type %s)" % (text, type(text).__name__)
TypeError: cannot serialize {'age': '20', 'name': 'Steve'} (type dict)

>>> import xml.etree.cElementTree as ET
>>> parent = ET.Element("parent")
>>> attribs = {'age': '20', 'name': 'Steve'}
>>> child = ET.SubElement(parent, "child", attribs)
>>> ET.dump(parent)
<parent><child age="20" name="Steve" /></parent>