对简单数据类型的encoding 和 decoding：
使用简单的json.dumps方法对简单数据类型进行编码，例如：
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import json
obj = [[1,2,3],123,123.123,'abc',{'key1':(1,2,3),'key2':(4,5,6)}]
encodedjson = json.dumps(obj)
print repr(obj)
print encodedjson
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from xml.etree import ElementTree
def print_node(node):
'''打印结点基本信息'''
print "=============================================="
print "node.attrib:%s" % node.attrib
if node.attrib.has_key("age") > 0 :
print "node.attrib['age']:%s" % node.attrib['age']
print "node.tag:%s" % node.tag
print "node.text:%s" % node.text
def read_xml(text):
'''读xml文件'''
# 加载XML文件（2种方法,一是加载指定字符串，二是加载指定文件）
# root = ElementTree.parse(r"D:/test.xml")
root = ElementTree.fromstring(text)
# 获取element的方法
# 1 通过getiterator
lst_node = root.getiterator("person")
for node in lst_node:
print_node(node)
# 2通过 getchildren
lst_node_child = lst_node[0].getchildren()[0]
print_node(lst_node_child)
# 3 .find方法
node_find = root.find('person')
print_node(node_find)
#4. findall方法
node_findall = root.findall("person/name")[1]
print_node(node_findall)
if __name__ == '__main__':
read_xml(open("test.xml").read())
from xml.etree import ElementTree
def print_node(node):
print "=============================================="
print "node.attrib:%s" % node.attrib
if node.attrib.has_key("age") > 0 :
print "node.attrib['age']:%s" % node.attrib['age']
print "node.tag:%s" % node.tag
print "node.text:%s" % node.text
def read_xml(text):
# root = ElementTree.parse(r"<xml><name>wc</name></xml>")
root = ElementTree.fromstring(text)
lst_node = root.getiterator("person")
for node in lst_node:
print_node(node)
lst_node_child = lst_node[0].getchildren()[0]
print_node(lst_node_child)
node_find = root.find('person')
print_node(node_find)
node_findall = root.findall("person/name")[1]
print_node(node_findall)
if __name__ == '__main__':
#read_xml(open("test.xml").read())
read_xml("<person><name>wc</name></person>")