pyOpt Error on Tutorial 1

[Maha]

I am trying to run pyOpt tutorial located at http://www.pyopt.org/tutorial.html.
It will display the Objective function but the line
slsqp = pyOpt.SLSQP()
gives the following error.
AttributeError: 'module' object has no attribute 'SLSQP'

It is installed on the following folder
C:\Python27\pyOpt-1.2.0\pyOpt\pySLSQP

could you please tell me why this is not available in the environment.