#shelve模块

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importshelve
d=shelve.open('shelve_test')

t = Tes(123)
t2 = Tes(123334)

name = ["alex","rain","test"]
d["test"] = name  # 持久化列表
d["t1"] = t  # 持久化类
d["t2"] = t2

d.close()
#写
importshelve,datetime
d = shelve.open('shelve_test')
info = {'age':22,'job':'it'}
name = ['alex','rain','test']
d['name']=name
d['info']=info
d['date']=datetime.datetime.now()
d.close()

#读
importshelve
d = shelve.open('shelve_test')
print(d.get('name'))
print(d.get('info'))
print(d.get('date'))

 

#xml模块

xmltes.xml

    

        2

        2008

        141100

        

        

    

    

        5

        2011

        59900

        

    

    

        69

        2011

        13600

        

        

    

importxml.etree.ElementTreeasET
tree = ET.parse("xmltes.xml")
root=tree.getroot()
#print(root) #文档内存地址
#print(root.tag) #根的名 标签名

#遍历 xml文档
for  childinroot:
    print(child.tag,child.attrib)
    foriinchild:
        print(i.tag,i.text,i.attrib#attrib属性 text内容
        

#只遍历year节点
fornodeinroot.iter('year'):
    print(node.tag,node.text)

#修改xml文档
fornodeinroot.iter('year'):
    new_year =int(node.text) +1
    node.text=str(new_year)
    node.set("updated","yes")#修改属性

tree.write("xmltes.xml")#写回原文件

#删除node
forcountryinroot.findall('country'):
    rank=int(country.find('rank').text)
    ifrank >50:
        root.remove(country)
tree.write('output.xml')

#创建xml
new_xml=ET.Element("personinfolist")
personinfo=ET.SubElement(new_xml,'personinfo',attrib={"enrolled":"yes"})
name=ET.SubElement(personinfo,"name")
name.text="alex"
age=ET.SubElement(personinfo,'age',attrib={"checked":"no"})
sex=ET.SubElement(personinfo,"sex")
age.text="88"
personinfo2=ET.SubElement(new_xml,'personinfo',attrib={"enrolled":"no"})
name=ET.SubElement(personinfo2,"name")
name.text="haha"
age=ET.SubElement(personinfo2,"age")
age.text='19'

et=ET.ElementTree(new_xml)#生成文档对象
et.write("tes.xml",encoding="utf-8",xml_declaration=True)
ET.dump(new_xml)#打印生成的格式

 

Configparser模块

#用于生成和修改常见配置文档
importconfigparser
#生成配置文件
config=configparser.ConfigParser()
config["DEFAULT"]={'ServerAliveInterval':'45',
                      'Compression':'yes',
                     'CompressionLevel':'9'}

config['bitbucket.org'] = {}
config['bitbucket.org']['User'] ='hg'
config['topsecret.server.com'] = {}
topsecret = config['topsecret.server.com']
topsecret['Host Port'] ='50022'     # mutates the parser
topsecret['ForwardX11'] ='no'  # same here
config['DEFAULT']['ForwardX11'] ='yes'
withopen('example','w')asconfigfile:
    config.write(configfile)
#读配置文件
conf=configparser.ConfigParser()
conf.read("example")
print(conf.defaults())
print(conf['bitbucket.org']['user'])    #section部分

#删除section

conf.read("example")

sec = conf.remove_section('bitbucket.org')#section部分 删除bitbucket.org部分
conf.write(open('example.cfg','w'))#写入 可修改原文件

#判断section部分

conf.read("example")

print(conf.has_section("topsecret.server.com"))#存在则为true

#添加section

conf.read("example")

sec2=conf.add_section("HOST")

conf.write(open('example.cfg','w'))


#修改section下的key value
conf.read("example.cfg")

conf.set('HOST','hostname_ip','192.168.0.1')  #conf.set(section,'key','value')
conf.write(open('example.cfg','w'))

 

#hashlib模块

importhashlib
#用于加密相关的操作
m = hashlib.md5()
m.update(b'hello')#update叠加 获取hello的md5值
print(m.hexdigest())#十六进制 输出并打印hello的md5值
m.update(b"It's me")
print(m.hexdigest())
m.update(b"It's been a long time since last time we ...")
print(m.hexdigest())

print('----------------------------------------')

m2=hashlib.md5()
m2.update(b"helloIt's me")  #拼起来
print(m2.hexdigest())


s2=hashlib.sha256()
s2.update(b"helloIt's me")
print(s2.hexdigest())

importhmac
#对我们创建 key 和 内容 再进行处理然后再加密 用于消息加密
h = hmac.new('天王盖地虎'.encode(encoding="utf-8"),'宝塔镇河妖'.encode(encoding='utf-8'))
print(h.digest())#十进制
print(h.hexdigest())

文章名称：shelve,xml,configparser,hashlib
网站URL：http://scyanting.com/article/jiphoc.html