human
I am working on the file "Day_02/01_ObjectOrientedProgramming/00_Object_Oriented_Programming.ipynb".
The first task is:
We define and create an empty Dynamic class.  The line of code:

d.name = "Dynamic"

creates a new name attribute, which is very different that other languages where you have to declaire the variables up front.
Methods
Methods are functions defined inside the body of a class. They are used to perform operations with the attributes of our objects. Methods are essential in encapsulation concept of the OOP paradigm. For example, we might have a connect() method in our AccessDatabase class. We need not to be informed how exactly the method connect connects to the database. We only know that it is used to connect to a database. This is essential in dividing responsibilities in programming, especially in large applications.
Can you write Python code for it?
assistant
#Here is the Python code you requested.

class Circle:
   pi = 3.141592

   def __init__(self, radius=1):
      self.radius = radius 

   def area(self):
      return self.radius * self.radius * Circle.pi

   def setRadius(self, radius):
      self.radius = radius

   def getRadius(self):
      return self.radius

c = Circle()

c.setRadius(5)
print c.getRadius()
print c.area()