5. Multiple Inheritance and What Object is It?

• Multiple inheritance is possible.

• There may be times when you want to check the type of an instance.

• Python has the isinstance function.

• It allows you to check if an instance of a class is actually of a given class.

1 class Ethernet: 2     def __init__(self, name, mac_address): 3         self.name = name 4         self.mac_address = mac_address 5 6 7 class Wireless(Ethernet): 8     def __init__(self, name, mac_address): 9         Ethernet.__init__(self, name, mac_address) 10 11 12 class PCI: 13     def __init__(self, bus, manufacturer): 14         self.bus = bus 15         self.manufacturer = manufacturer 16 17 18 class USB: 19     def __init__(self, device): 20         self.device = device 21 22 23 class PCIEthernet(PCI, Ethernet): 24     def __init__(self, bus, manufacturer, name, mac_address): 25         PCI.__init__(self, bus, manufacturer) 26         Ethernet.__init__(self, name, mac_address) 27 28 29 class USBWireless(USB, Wireless): 30     def __init__(self, device, name, mac_address): 31         USB.__init__(self, device) 32         Wireless.__init__(self, name, mac_address) 33 34 35 wlan0 = USBWireless("usb0", "wlan0", "00:33:44:55:66") 36 eth0 = PCIEthernet("pci :0:0:1", "realtek", "eth0", "00:11:22:33:44") 37 38 39 print(isinstance(wlan0, Ethernet)) 40 print(isinstance(eth0, PCI)) 41 print(isinstance(eth0, USB)) Edit this code line that just executed next line to execute << First < Prev Next > Last >> Step 1 of 37 Submit Python Tutor by Philip Guo Customize visualization (NEW!)

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