Python Study Notes -2017.5.4thon study notes-2017.8.11

JSON pickle serialization can dump multiple times, but cannot load multiple problems we can use the Shelve Module #shelve module, is the pickle more layer of the package import shelve,datetimed = Shelve.open (" Shelve module ") A = {" name ":" Jack "," Job ":" It "}b = [1,2,3,4,5,6]c = (7,8,9,datetime.datetime.now ()) d[" a "] = ad[" B "] = bd[" C "] = Cd.close () Print (D.get ("a")) Print (D.get ("B")) Print (D.get ("C")) # Print (D.items ()) E = D.items () for I in E:print (i) # XmlImport Xml.etree.ElementTree as Ettree = Et.parse ("National Provinces and Cities. xml") root = Tree.getroot () #取得根目录print (root) for child in Root: #取得子title print (Child.tag, child.attrib) #子title属性 for I in Child:print (I.tag, I.text) #子title字符 # As above is traversing all and playing Print, the following example only loops with a field and prints for the Root.iter ("year"): Print (Node.tag,node.attrib, node.text) #如果有很多层, only one layer at a to continue to traverse down, #    Modify the XML file for node in Root.iter ("year"): Print (Node.tag,node.attrib, node.text) newyear = Int (node.text) + # to int and add 1 Node.text = str (newyear) #重新修改为字符串格式并赋值给year node.set ("Update", "Yes") #加入新的属性tree. Write ("National Provinces and Cities 2.xml") #也可以写入原文件名字, Write directly to the original file. #删除for Country in Root.findall ("Country"): #找To all country nodes rank = Int (Country.find ("Rank"). Text) if rank > 50:root.remove ("Cuntry") tree.write ("xxxxx.x ML ") #写入 # Create an XML document yourself import Xml.etree.ElementTree as Etnew_xml = ET. Element ("NameList") #根节点name = ET. Subelement (New_xml, "name", attrib={"Jack": "Yes"}) #newxml子节点age = ET. subelement (Name, "Age", attrib={"Jack": "*"}) #name子节点sex = ET. subelement (name, "Sex") #name子节点sex. Text = "Male" #赋值et = ET. ElementTree (New_xml) #生成文档对象et. Write ("Test.xml", encoding= "Utf-8", Xml_declaration=true #xml =1.0) #写入文件ET. Dump (new_ XML) #生成 #pyyaml, write the configuration document using #configparser, another write configuration file __author__ = "Jack" Import configparserconfig = Configparser.                    Configparser () #生成一个config处理对象config ["DEFAULT"] = {"Serveraliveinterval": "Compression": "Yes", "CompressionLevel": 9} #生成对象并填写类似于字典的key和valueconfig ["bitbucket.org"] = {} #先生成对象config ["bitbucket.org"] [User] ] = "HG" #再填写keyconfig ["topsecret.server.com"] ={}topsecrect = config["topsecret.server.com"]topsecrect["Host Port"] = "50022" topsecrect["ForwardX11"] = "no" config["DEFAULT" ["ForwardX11"] = "yes" with open ("Exzample.ini", "W") as Configfile:config. Write (ConfigFile) will generate the following INI configuration file [default]compression = Yescompressionlevel = 9serveraliveinterval = 45forwardx11 = yes[ Bitbucket.org]user = Hg[topsecret.server.com]host Port = 50022forwardx11 = no# As above is to write import Configparserconfig = Configparser. Configparser () config.sections () #config. Read ("Exzample.ini") print (Config.sections ()) #不打印defaultprint ( Config.defaults ()) #打印default, which means printing all print (config["bitbucket.org" ["User"]) #删除print (Config.has_section (" Bitbucket.org ")) #是否存在bitbucket节点sec = Config.remove_section (" bitbucket.org ") config.write (Open (" Test1 "," W ")) # Delete this node and re-write a new Test1 file

Python Study Notes -2017.5.4thon study notes-2017.8.11