Construct an array with Nan elements

Question

I do not know how to construct an array with some Nan elements and other float elements. Can someone share a code for this requirement?

Answer 1

Create a numpy array with nan value and float values and print all the values in the array which are not nan,

import numpy
a = numpy.array([numpy.nan, 1,2,numpy.nan,3,4,5])
print(a)
print(a[~numpy.isnan(a)])