try:
    import clusterpy
except ImportError:
    print('pysal.contrib.clusterpy requires clusterpy')
    print('clusterpy not found.')
else:
    from .clusterpy_ext import Layer
    from .clusterpy_ext import loadArcData
    from .clusterpy_ext import importCsvData
    from .clusterpy_ext import addRook2Layer
    from .clusterpy_ext import addQueen2Layer
    from .clusterpy_ext import addArray2Layer
    from .clusterpy_ext import addW2Layer
