Best way to initialize and fill an numpy array?

Question

I want to initialize and fill a numpy array. What is the best way?

This works as I expect:

>>> import numpy as np
>>>          


        

Answer 1

You could also try:

In [79]: np.full(3, np.nan)
Out[79]: array([ nan,  nan,  nan])

The pertinent doc:

Definition: np.full(shape, fill_value, dtype=None, order='C')
Docstring:
Return a new array of given shape and type, filled with `fill_value`.

Although I think this might be only available in numpy 1.8+