Python-json&pickle Serialization--026

Two modules for serialization

• JSON, used to convert between string and Python data types
• Pickle for conversion between Python-specific types and Python data types

The JSON module provides four functions: dumps, dump, loads, load

The Pickle module provides four functions: dumps, dump, loads, load

Example one:

1. File Write

info = {        ' name ': ' Robin ',        ' old ': '    }f = open (' E:\python-project\ceshi.txt ', ' W ') f.write (str (info)) F.close ()

2. File read

f = open (' E:\python-project\ceshi.txt ', ' r ') data = eval (F.read ()) F.close () print (data[' old ')

　　

Example two: (using JSON serialization)

1. File Write

Import jsoninfo = {        ' name ': ' Robin ',        ' old ': '    }f = open (' E:\python-project\ceshi.txt ', ' W ') F.write ( Json.dumps (info))  #相当于json. Dump (info,f) f.close ()

　　

2. File read

Import jsonf = open (' E:\python-project\ceshi.txt ', ' r ') data = Json.loads (F.read ()) #相当于data = Json.load (f) f.close () Print (data[' old ')

Strength III: (using pickle serialization)

1. File Write

Import pickledef SAS (name):    print ("Hello", name) info = {        ' name ': ' Robin ',        ' old ': ' + ',        ' func ': SAS    }f = open (' E:\python-project\ceshi.txt ', ' WB ') F.write (Pickle.dumps (info))    #相当于pickle. Dump (info,f) f.close ()

2. File read

Import pickledef SAS (name):    print ("Hello2", name) F = open (' E:\python-project\ceshi.txt ', ' RB ') data = Pickle.loads ( F.read ())  #相当于data = Pickle.load (f) f.close () print (data[' func '] (' wen '))

　　

Python-json&pickle Serialization--026