dom1.py

python web programming 部分

#!/usr/bin/python
import sys
from xml.dom.ext import PrettyPrint
from xml.dom import minidom

doc = minidom.parse(open(sys.argv[1]))

# Generic tree walker 
def walk_tree(n,func):
    while n:
        func(n)
        walk_tree(n.firstChild,func)
        n = n.nextSibling

# Fix some nodes
def fix_node(n):
    if n.nodeType == n.ELEMENT_NODE:
        if n.tagName == "ingredients":
            n.tagName = "ingredientlist"
        if n.tagName == "item":
            # Change the name of "item" to "ingredient"
            n.tagName = "ingredient"
            # Change attribute name
            attr = n.getAttribute("num")
            n.setAttribute("quantity",attr)
            n.removeAttribute("num")

walk_tree(doc,fix_node)
PrettyPrint(doc)