human
Solve the following python programming problem given the following code:
def _create_fake_pci_device(self) : 
    def fake_pci_device_get_by_addr(ctxt, id, addr) : 
        return test_pci_device.fake_db_dev 
ctxt = context.get_admin_context () 
    self.stub_out ('nova.db.pci_device_get_by_addr', self) 
    self.pci_device = objects.PciDevice.get_by_dev_addr (ctxt, 1, 'a') 

    
    

    Fix the buggy line: self.stub_out ('nova.db.pci_device_get_by_addr', self)
assistant
#Here is Python code to fix the buggy line: self.

self.stub_out ('nova.db.pci_device_get_by_addr', def fake_pci_device_get_by_addr()