the child class in the Python code. Example 4-2 shows
how this works, creating a second class named Switch,
using the Router class as parent. In addition, it creates a
different getdesc() method that prints text about a
switch rather than about a router.
Example 4-2 Router Class and Switch Class with
Inheritance
Click here to view code image
class Router:
'''Router Class'''
def __init__(self, model, swversion,
ip_add):
'''initialize values'''
self.model = model
self.swversion = swversion
self.ip_add = ip_add
def getdesc(self):
'''return a formatted description of
the router'''
desc = (f'Router Model :
{self.model}\n'
f'Software Version :
{self.swversion}\n'
f'Router Management Address:
{self.ip_add}')
return desc
class Switch(Router):
def getdesc(self):
'''return a formatted description of
the switch'''
desc = (f'Switch Model :
{self.model}\n'
f'Software Version :
{self.swversion}\n'
f'Switch Management Address:
{self.ip_add}')
return desc
rtr1 = Router('iosV', '15.6.7', '10.10.10.1')
rtr2 = Router('isr4221', '16.9.5',
'10.10.10.5')
sw1 = Switch('Cat9300', '16.9.5', '10.10.10.8')
print('Rtr1\n', rtr1.getdesc(), '\n', sep='')
print('Rtr2\n', rtr2.getdesc(), '\n', sep='')
print('Sw1\n', sw1.getdesc(), '\n', sep='')