Python3从零学习(七)

来源：互联网发布：北京九五太维知乎编辑：程序博客网时间：2024/04/28 06:39

import jsondata = {'no' : 1,        'name' : 'Runoob',        'url' : 'https://www.baidu.com'        }json_str = json.dumps(data)print("JSON对象:",json_str)datas = json.loads(json_str)print("no:",datas['name'])print("name",datas['url'])#写json文件with open('data.json','w') as f:    json.dump(data,f)#读json数据with open('data.json','r') as f:    data = json.load(f)    print(data)

movies.xml

<collection shelf="New Arrivals"><movie title="Enemy Behind">   <type>War, Thriller</type>   <format>DVD</format>   <year>2003</year>   <rating>PG</rating>   <stars>10</stars>   <description>Talk about a US-Japan war</description></movie><movie title="Transformers">   <type>Anime, Science Fiction</type>   <format>DVD</format>   <year>1989</year>   <rating>R</rating>   <stars>8</stars>   <description>A schientific fiction</description></movie>   <movie title="Trigun">   <type>Anime, Action</type>   <format>DVD</format>   <episodes>4</episodes>   <rating>PG</rating>   <stars>10</stars>   <description>Vash the Stampede!</description></movie><movie title="Ishtar">   <type>Comedy</type>   <format>VHS</format>   <rating>PG</rating>   <stars>2</stars>   <description>Viewable boredom</description></movie></collection>

import xml.saxclass MovieHandler(xml.sax.ContentHandler):    def __init__(self):        self.CurrentData = ""        self.type = ""        self.format = ""        self.year = ""        self.rating = ""        self.stars = ""        self.description = ""    def startElement(self, name, attrs):        self.CurrentData = name        if name == "movie":            print("-----------")            title = attrs["title"]            print("Tiele:",title)    def endElement(self, name):        if self.CurrentData == "type":            print("Type:",self.type)        elif self.CurrentData == "format":            print("Format:",self.format)        elif self.CurrentData == "year":            print("Year:",self.year)        elif self.CurrentData == "rating":            print("Rating:", self.rating)        elif self.CurrentData == "stars":            print("Stars:", self.stars)        elif self.CurrentData == "description":            print("Description:", self.description)        self.CurrentData = ""    def characters(self, content):        if self.CurrentData == "type":            self.type = content        elif self.CurrentData == "format":            self.format = content        elif self.CurrentData == "year":            self.year = content        elif self.CurrentData == "rating":            self.rating = content        elif self.CurrentData == "stars":            self.stars = content        elif self.CurrentData == "description":            self.description = contentif (__name__ == "__main__"):    # 创建一个 XMLReader    parser = xml.sax.make_parser()    # turn off namepsaces    parser.setFeature(xml.sax.handler.feature_namespaces,0)    # 重写 ContextHandler    Handler = MovieHandler()    parser.setContentHandler(Handler)    parser.parse("movies.xml")

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