pyhton与json,Xml

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：

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
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 ElementTreedef 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.textdef 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>")