import numpy as np

Signed 64-bit integer types

np.int64

int

np.full((3, 3), 4.001, dtype=np.int64)

array([[4, 4, 4],
       [4, 4, 4],
       [4, 4, 4]])

Standard double-precision floating point

np.float32

numpy.float32

np.full((3, 3), 4.032, dtype=np.float32)

array([[4.032, 4.032, 4.032],
       [4.032, 4.032, 4.032],
       [4.032, 4.032, 4.032]], dtype=float32)

Compllex numbers represented by 128 floats

np.complex

complex

Boolean type storing TRUE and FALSE values

np.bool

bool

np.eye(3, dtype=np.bool)

array([[ True, False, False],
       [False,  True, False],
       [False, False,  True]])