Python namespaces

In this tutorial, we will learn about what is namespace, types of namespaces and its modification along with the example.

Namespace

A namespace represents a memory block where names are mapped (or linked) to objects. Suppose we write:

n = 10 

Here, �n� is the name given to the integer object 10. Please recollect that numbers, strings, and lists� are all considered as objects in Python. In the above name �n� is linked to 10 in the namespace.

Class and instance namespaces

A class maintains its own namespace, called �class namespace�. In the class namespace, the names are mapped to class variables. Similarly, every instance will have its own name space, called �instance namespace� In the instance namespace, the names are mapped to instance variables.

class namespace:

Modifying class namespace can be done in the following way.

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class Student: 
   n=10 
print(Student.n) 
Student.n+=1 
print(Student.n)

instance namespace:

Modifying class variable in the instance namespace can be done in the following way.

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class Student:
   n=10
s1 = Student() 
s2 = Student() 
print(s1.n) #displays 10 
s1.n+=1 #modify it in s1 instance namespace 
print(s1.n) #displays 11
print(s2.n) 

Conclusion:

In this tutorial, we have learned about what is namespace in python and types of namespaces and modifying those.