[libvirt] Python binding APIs strict or loose

[Guannan Ren]

            Hi

                 There is a question. we need strict python binding API 
or loose one.

                 For example:
                 The setSchedulerParameters(), it accepts one of 
parameters: 'vcpu_quota'
                 In C its type is of 'long long', then we need a 
conversion from PyInt/PyLong
                 to 'long long' by using cpython function 
'PyLong_AsLongLong'.
                 The problem is when the user python pass in a value of 
type Pyfloat instead
                 of PyInt/PyLong, the cpython function drops the 
fraction part of the value
                 automatically, Is it what we want or we need to add a 
type checking to ensure that
                 the type of value passed in is PyInt/PyLong, otherwise, 
we raise an exception.

> >> dom.schedulerParameters()
                 {'vcpu_quota': -1L, 'vcpu_period': 100000L, 
'cpu_shares': 500L}

> >> dom.setSchedulerParameters({'vcpu_quota': 10.88})
                 works as dom.setSchedulerParameters({'vcpu_quota': 10})

                 Any idea?

                 Guannan Ren