Section nineth: python pickle serialization, adorners, modules

Python personal notes, purely convenient to query

In the middle of the exit to save, and then enter again when the point of exit. dictionary-----string (hard disk)------dictionary Pickle Syntax dump: write the dictionary to the hard disk file: import pickleaccount_info = {' a ': ' bbbbbbbbb ', ' b ': ' CCCCCCCCC '}f=file (' account.pki ', ' WB ')           #定义一个二进制文件, Only strings can be written to the hard disk, so the dictionary is first converted to a string. Pickle.dump (account_info,f) F.close () reads a file from the hard disk into a dictionary: import picklepki_file=open (' account.pki ', ' RB ') Account_ List=pickle.load (pki_file) pki_file.close ()   If you do not write to a file, but instead send a message via the socket: a= {' a ': ' bbbbbbbbb ', ' b ': ' CCCCCCCCC '}b=pickle.dumps (a) c=pickle.loads (b) Pickle regular expression: import rep=re.compile (' Hello ')    #匹配hellostr_a =   ' Hello,my nam is darren ' p.match (str_a) m=p.match (str_a) m.group ()     #看返回值, If none then there is no match-----------------p=re.compile (' my ') p.serach (str_a)       #匹配整行if  m  is not none:print  "mactched"----------------m=re.search (' my ', str_a)     M.group () re.search (' my ', str_a). group ()      #一行搞定模糊查询: Print re.FindAll (' \s+ ',  str_a)     #\s+ matching spaces print re.findall (' \s+ ',  str_a)      #\s+ matches the Print re.findall (' \d+ ',  str_a) that remove the space and     #\d+ matches the print of the number  re.findall (' \d+ ',  str_a)     #\d+ match the print re.split that removed the number (' \D+ ',  str_a)        #匹配到的做为分隔符print  re.split (' b ',  str_a)           #以b做为分隔符. Print re.split (' \\\\ ',  str_a)       #前面两个为转义, followed by \ \ For two separators Print re.split ( Re.escape (' \ \ '),  str_a)    #和上面一样re. Sub (' \d+ ', ' | ', a)    #把a中的空格替换为 |. Re.sub (' \d+ ', ' | ', a,1)    #把a中的空格替换为 |, matching only one .    #匹配任意一个字符 .+   #匹配任意一个或多个字符   -----------------------------python module--------------------------------if You import a directory such as day3, you will need to create an empty file in the Day3 directory. cd day3touch __init__.py Import an interactive configuration file, you need to first change the swap script to a function:def sayhi  (): If dayhi ==main ()----------------------------------------python------------------------------------------adorner: View Sayhi () The time it took to execute:import  Timedef sayhi ():     start=time.time ()     print  ' Hi,your  sister     time.sleep (0.5)      end=time.time ()      print  ' this function costs : ', end - startsayhi () If the time to calculate 100 functions takes: import timedef time_counter (func):     def wrapper ():             start=time.time ()          func ()          end=time.time ()          print  ' This function costs : ',end -  start    return wrapper  @time_counter  def sayhi ():         print  ' hi,your&Nbsp;sister ' @time_counterdef  salary ():    print  ' your salary: ' Sayhi ()  salary ()

This article from "small East Elder brother" blog, declined reprint!

Section nineth: python pickle serialization, adorners, modules