學習筆記 Python XML解析

xml.sax

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官網文件：

python處理xml主要有兩種模型，xml.dom和xml.sax分別定義了兩種處理模型的介面：

the xml handling submodules are:

手冊：inte***ce

section

purpose

domimplementationdomimplementation objects

inte***ce to the underlying implementation.

nodenode objects

base inte***ce for most objects in a document.

nodelistnodelist objects

inte***ce for a sequence of nodes.

documenttypedocumenttype objects

information about the declarations needed to process a document.

documentdocument objects

object which represents an entire document.

elementelement objects

element nodes in the document hierarchy.

attrattr objects

attribute value nodes on element nodes.

commentcomment objects

representation of comments in the source document.

texttext and cdatasection objects

nodes containing textual content from the document.

processinginstructionprocessinginstruction objects

processing instruction representation.

import xml.dom.minidom

cproject = r'.cproject'
dom = xml.dom.minidom.parse(cproject)
options = dom.getelementsbytagname(
'option'
)for opt in options:
if opt.getattribute(
'superclass')==
'gnu.c.compiler.option.preprocessor.def.symbols'
: nod_text = opt.childnodes[0]
nod_elem = opt.childnodes[1]
last_child = opt.lastchild
nod_text = nod_text.clonenode(
false
) nod_elem = nod_elem.clonenode(
false
) nod_elem.setattribute(
'value'
,'gi_commit="%s"'
% git_commit)
opt.insertbefore(nod_text, last_child)
opt.insertbefore(nod_elem, last_child)
nod_text = nod_text.clonenode(
false
) nod_elem = nod_elem.clonenode(
false
) nod_elem.setattribute(
'value'
,'git_branch="%s"'
% git_branch)
opt.insertbefore(nod_text, last_child)
opt.insertbefore(nod_elem, last_child)
break
f =open
(cproject,
'w')
dom.writexml(f, cproject+
'.new'
)

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