zeros

In [13]: import numpy as np

In [14]: a = np.zeros(5)

In [15]: a
Out[15]: array([ 0.,  0.,  0.,  0.,  0.])

In [16]: a.dtype
Out[16]: dtype('float64')

In [17]: a.shape
Out[17]: (5,)

In [18]: a.ndim
Out[18]: 1