Python Basics 5-File | JSON serialization

The following code is not tested, just as a code snippet as a future reference, these dead APIs are put in here for a moment to look at the summary

ImportSYSPrint(Sys.path)#---------------file----------------------------#The first kind of direct wayfile1 = open ("Test.txt") File2= Open ("output.txt","W")#W means write (overwrite) r means read a represents append (write -up) whileTrue:line=file1.readline () file2.write ('"'+ Line[:s] +'"'+",")    if  notLine : Breakfile1.close () file2.close ( )#read () reads all lines of a text file into a string#ReadLine () reads a row#readlines () reads all lines of text into a list, and each row is an element of the list#The second type of file iteratorFile2 = open ("output.txt","W") forLineinchOpen"Test.txt"): File2.write ('"'+ Line[:s] +'"'+",")#third type of file context manager#Open FileWith open ("Somefile.txt","R") as F:data=F.read ()#Loop the entire documentWith open ("Somefile.txt","W") as F: forLineinchF:#process each row#writing textWith open ("Somefile.txt","W") as F:f.write ("XXX") F.write ("XXX")#to write the printed line to the fileWith open ("Somefile.txt","W") as F:Print(Line1, file=f)Print(Line2, file=f)#binary file read/writef = open ("edc.jpg","RB")Print(F.read ())#output \xff\xd8 .... Hexadecimal representation of bytes#any non-standard text file (Py2 standard is ASCII, PY3 is Unicode), read the file in binary, use. Decode () to decodef = open ("DeGuangGuo.txt","RB") U= F.read (). Decode ('Deyuncode')#operation of files and directories#Python calls the built-in OS module to invoke the operating system's interface functionsImportOsos.name#POSIX = = Nix NT = = WindowsOs.uname ()#View specific Information#environment variable exists in Os.environ is List#absolute path to the current directoryOs.path.abspath ('.')#Create a new directory under a directory to represent the new directoryOs.path.join ('/users/edc','Pictures')#get a string that is a new path#Create a directoryOs.mkdir ('/users/edc/pictures/')#Delete directoryOs.rmdir ('/users/edc/pictures')#splitting a stringOs.path.split ('/users/edc/pictures/aj.avi')#split into two parts, followed by the last level of the directory or file#('/users/edc/pictures/', ' Aj.avi ')#get file name extensionOs.path.splitext ('/users/edc/pictures/aj.avi')#('/users/edc/pictures/aj ', '. avi ')#file RenameOs.rename ('xxx.xx','BBB')#Deleting FilesOs.remove ('XXX')#you can use Shutil to help us with our files.#List all directories in the current directory[x forXinchOs.listdir ('.')ifOs.path.isDir (x)]#list. py Files[x forXinchOs.listdir ('.')ifOs.path.isDir (x) andOs.path.splitext (x) [1] = ='. PY']#serialization from memory to hard disk or transfer process for serialization from hard disk to memory for deserializationImportPickled= Dict (name='Jack', age=23, score=60) Str= Pickle.dumps (d)#call Pickle's dumps function for serialization processingPrint(str) F= Open ("Dump.txt","WB") Pickle.dump (d, F)#serialization of content to a filef.close ()#deserializationImportPicklef= Open ("Dump.txt","RB") d= Pickle.load (f)#call load to do deserializationf.close ()Print(d)Print('name is%s'% d['name'])#Python2 and 3 inside of the pickle inconsistent, in order to ensure HarmonyTry:    ImportCpickle as PickleexceptImporterror:ImportPickle#JSON serialization uses this library of JSON toImportJsond1= Dict (name='Jack', age = score=32,) Str= Json.dump (D1)#Serialization ofD2= Json.loads (str)#deserialization

Python Basics 5-File | JSON serialization