Python: confused with classes, attributes and methods in OOP
- by user1586038
A.
Am learning Python OOP now and confused with somethings in the code below.
Question:
1. def init(self, radius=1):
What does the argument/attribute "radius = 1" mean exactly?
Why isn't it just called "radius"?
The method area() has no argument/attribute "radius".
Where does it get its "radius" from in the code?
How does it know that the radius is 5?
"""
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)
"""
B.
Question:
In the code below, why is the attribute/argument "name" missing in the brackets?
Why was is not written like this: def init(self, name)
and def getName(self, name)?
"""
class Methods:
def init(self):
self.name = 'Methods'
def getName(self):
return self.name
"""
