RuntimeWarning: Divide by Zero error: How to avoid? PYTHON, NUMPY

Question

I am running in to RuntimeWarning: Invalid value encountered in divide

 import numpy
 a = numpy.random.rand((1000000, 100))
 b = numpy.random.rand((1,100))
          


        

Answer 1

You can use np.where( condition ) to perform a conditional slice of where norms does not equal 0 before dividing:

norms = np.where(norms != 0 ) 
angles = dots/norms