Question

6.2. inner class(内嵌类)

#!/usr/bin/env python3
 
import os, sys
 
class parent:
def __init__(self):
self.name = 'parent'
 
def getName(self):
print(self.name)

class child:
def __init__(self):
self.name = 'child'
 
def getName(self):
print(self.name)
def getParentName(self):
print(parent.name)
 
if __name__ == '__main__':
child =  parent.child()
child.getName()

p = parent()
p.getName()
c =  p.child()
c.getName()
c.getParentName()		

6.2.1. 内嵌 Class 继承

class Geometry:
    class Curve:
        def __init__(self,c=1):
            self.c = c                          #curvature parameter
            print ('Curvature %g'%self.c)
            pass                                #some codes

    class Line(Curve):
        def __init__(self):
            Geometry.Curve.__init__(self,0)     #the key point
            pass                                #some codes

g = Geometry()
C = g.Curve(0.5)
L = g.Line()