Cannot see CBC output, independent of logLevel Setting

I tried the basic example problem but I tried to manipulate the `cbcModel.logLevel` parameter in order to see the CBC output. It correctly solves the problem, but there is no output to the python console. How do I see the CBC output?

```
import numpy as np
from cylp.cy import CyCbcModel, CyClpSimplex
from cylp.py.modeling.CyLPModel import CyLPModel, CyLPArray
model = CyLPModel()

x = model.addVariable('x', 3, isInt=True)
y = model.addVariable('y', 2)

A = np.matrix([[1., 2., 0],[1., 0, 1.]])
B = np.matrix([[1., 0, 0], [0, 0, 1.]])
D = np.matrix([[1., 2.],[0, 1]])
a = CyLPArray([5, 2.5])
b = CyLPArray([4.2, 3])
x_u= CyLPArray([2., 3.5])

model += A*x <= a
model += 2 <= B * x + D * y <= b
model += y >= 0
model += 1.1 <= x[1:3] <= x_u

c = CyLPArray([1., -2., 3.])
model.objective = c * x + 2 * y.sum()

s = CyClpSimplex(model)

cbcModel = s.getCbcModel()
cbcModel.logLevel = 1

cbcModel.branchAndBound()
'solution'
sol_x = cbcModel.primalVariableSolution['x']
```