Explain pickling and unpickling in Python ?

In Python Pickling is used for serializing objects in binary streams. Pickling can be performed on objects of data types like Booleans, Integers, Floats, Complex numbers, normal and Unicode Strings, Tuples, Lists, Sets, and Dictionaries.

UnPickling is reverse of the Pickling process, here binary streams have deserialized an object.

A simple example of Pickling and UnPickling In Python

import pickle

// Pickling
dogs_dict = { 'Ozzy': 3, 'Filou': 8, 'Luna': 5, 'Skippy': 10, 'Barco': 12, 'Balou': 9, 'Laika': 16 }
filename = 'dogs'
outfile = open(filename,'wb')
pickle.dump(dogs_dict,outfile)
outfile.close()
// UnPickling
infile = open(filename,'rb')
new_dict = pickle.load(infile)
infile.close()