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.