Python object serialization, pickle

Python pickle supports serializing and de-serializing object. Let's a simple example code

 
import pickle

def pickleWrite(fileName,data):
    f = open(fileName, 'wb')
    pickle.dump(data, f)
    f.close()

def pickleRead(fileName):
    f = open(fileName, 'rb')
    data = pickle.load(f)
    f.close()
    return data

class Student(object):
    marks=None
    def __init__(self,n='name'):
        self.name=n
    def setMark(self,m=0):
        self.marks=m
    def getMark(self):
        return self.marks
    def getName(self):
        return self.name

fiieName='data.pk'

s1=Student("jonycse")
s1.setMark(5)
pickleWrite(fiieName,s1) #object s1 saved on file 'data.pk'

Now pickle object s1 saved on file 'data.pk'. You just need to read the file for getting saved object.
I am using two function named pickleWrite and pickleRead for read write data.

 


#s1=Student("jonycse")
#s1.setMark(5)
#pickleWrite(fiieName,s1)

s2=pickleRead('data.pk')
print s2.getName()
print s2.getMark()

Output:

jonycse
5