How to create a matrix of complex numbers in python using numpy ?

Examples of how to create a matrix of complex numbers in python using numpy:

Create a matrix of random numbers

>>> Z = np.array([[1+2j,1+3j],[5+6j,3+8j]])
>>> Z
array([[ 1.+2.j,  1.+3.j],
       [ 5.+6.j,  3.+8.j]])

Create a matrix of random numbers with 0+0j

>>> import numpy as np
>>> Z = np.zeros(10, dtype=complex)
>>> Z
array([ 0.+0.j,  0.+0.j,  0.+0.j,  0.+0.j,  0.+0.j,  0.+0.j,  0.+0.j,
        0.+0.j,  0.+0.j,  0.+0.j])

Another example

>>> Z = np.zeros((2,2), dtype=complex)
>>> Z
array([[ 0.+0.j,  0.+0.j],
       [ 0.+0.j,  0.+0.j]])
>>>

Create a matrix of random complex numbers

>>> Z = np.random.random(10) + np.random.random(10) * 1j
>>> Z
array([ 0.07062625+0.88227272j,  0.34682234+0.65946885j,
        0.92763215+0.86887474j,  0.86426062+0.73231969j,
        0.58372574+0.1017348j ,  0.72396286+0.92159865j,
        0.27617746+0.96721269j,  0.22302559+0.09493447j,
        0.49912649+0.03699016j,  0.06242473+0.3835314j ])

References