Fixed print statement for Python 3 compatibility
Fixed print statement for Python 3 compatibility

ioam/holoviews,vascotenner/holoviews,vascotenner/holoviews,vascotenner/holoviews,ioam/holoviews,basnijholt/holoviews,basnijholt/holoviews,ioam/holoviews,basnijholt/holoviews