Numpy: Create an array of ones

# Import library
import numpy as np

# Create
x = np.ones((3,3)) # array dimensions specified in a tuple

# Output
print(x)
print(type(x))
print('Size:',np.size(x))

[[1. 1. 1.]
 [1. 1. 1.]
 [1. 1. 1.]]
<class 'numpy.ndarray'>
Size: 9