In [3]: x = np.array(['abc', 'def', ''], 'S')
In [4]: x.all()
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/wonkabar/data1/builds/betadrizzle/<ipython console> in <module>()
TypeError: cannot perform reduce with flexible type
This is a sensible operation. I wonder if there's a way to make it work.