Python16_day06 "class, re module, subprocess module, XML module, shelve module"

One, shelve module

　　

1 Importshelve2 3 #based on the Pickle module,4 5D = Shelve.open ('shelve_test')6 7 8 classTest (object):9     def __init__(self, n):TenSELF.N =N One  AT1 = Test (123) -T2 = Test (456) -name = ['Alex','Rain','Test'] thed['Test'] =name -d['T1'] =T1 -d['T2'] =T2 -  +D.close ()

Second, XML module

1. Increase, delete, change, check

ImportXml.etree.ElementTree as Ettree= Et.parse ("List.xml") Root=tree.getroot ()Print(Root.tag)#Enquiry## Traverse XML document#For child in root:#print (Child.tag, child.attrib)#For I in the child :#print (I.tag, i.text)#Traverse only the year node#For node in Root.iter (' year '):#print (Node.tag, node.text)#Modify#For node in Root.iter (' year '):#new_year = Int (node.text) + 1#node.text = str (new_year)#Node.set ("updated", "yes")##tree.write ("Xmltest.xml")#Delete Node#For country in Root.findall (' Country '):#rank = Int (country.find (' rank '). Text)#if rank >:#root.remove (country)##tree.write (' Output.xml ')

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2. Create

1 ImportXml.etree.ElementTree as ET2 3 #Root4New_xml = ET. Element ("NameList")5 6 7Name = ET. Subelement (New_xml,"name", attrib={"enrolled":"Yes"})8Age = ET. subelement (Name," Age", attrib={"checked":"No"})9Sex = ET. subelement (Name,"Sex")TenSex.text =' -' OneName2 = ET. Subelement (New_xml,"name", attrib={"enrolled":"No"}) AAge = ET. Subelement (Name2," Age") -Age.text =' +' -  the #Generating Document Objects -ET =ET. ElementTree (New_xml) -Et.write ("Test.xml", encoding="Utf-8", xml_declaration=true)

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Three, Shutil module

1 ImportShutil2 #http://www.cnblogs.com/wupeiqi/articles/4963027.html3 4 #Copy fileobj5 #f1 = open (' Access.log ')6 #F2 = open ("Access1.log", ' W ')7 #shutil.copyfileobj (F1, F2, length=1024)8 9 #Copy FileTen #shutil.copyfile (' Access.log ', ' Access2.log ') One  A #Copy permissions only. Content, group, user are not changed - #Shutil.copymode () -  the #information about the status of the copy, including: mode bits, Atime, mtime, flags. Content unchanged - #Shutil.copystat () -  - #Copy Directory

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Four, subprocess module

1 Importsubprocess2 3res = subprocess. Popen ("pwd", Shell=true, stdout=subprocess. PIPE, Stderr=subprocess. PIPE, cwd="/")4 Print(Res.stdout.read ())5 6 #Res.poll ()7 #res.terminate ()8 #res.wait ()9 TenSubprocess.getstatusoutput ("ls")

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Five, re module

ImportRe#match from scratch, rarely usedRe.match ("\d+","341221")#Match onceRe.search ("\d+","341221")#Match multiple timesRe.findall ("\d+","341221")#split with commasRe.split (",","341,221")#match to the replacement, the default is to override all, count specified number of times.Re.sub ("\d{4}","1995","1399,2017", Count=1)#Re. I (ignoring case)#Print (Re.search ("[A-Z]", "Alex", Flags=re. I))#Re. M (matches multiple lines)#Print (Re.search ("^is", "My Name\nis Alex", Flags=re. M))#Re. S (multi-line match together)#Print (Re.search (". +", "My \nname", Flags=re. S))

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Vi.. Configparser Module

1 mport Configparser2  3Config =Configparser. Configparser ()4config["DEFAULT"] = {'Serveraliveinterval':' $',5                       'Compression':'Yes',6                      'CompressionLevel':'9'}7  8config['bitbucket.org'] = {}9config['bitbucket.org']['User'] ='HG'Tenconfig['topsecret.server.com'] = {} OneTopsecret = config['topsecret.server.com'] Atopsecret['Host Port'] ='50022'     #mutates the parser -topsecret['ForwardX11'] ='No'  #same here -config['DEFAULT']['ForwardX11'] ='Yes' theWith open ('Example.ini','W') as ConfigFile: -Config.write (ConfigFile)

Vii.. Class

Http://www.cnblogs.com/wupeiqi/p/4493506.html

Http://www.cnblogs.com/wupeiqi/p/4766801.html

Python16_day06 "class, re module, subprocess module, XML module, shelve module"