import numpy as np

r = np.array([
    [1, 2, 3, 4],
    [5, 6, 7, 8],
])
g = np.array([
    ['a', 'b', 'c', 'd'],
    ['e', 'f', 'g', 'h'],
])
b = np.array([
    ['A', 'B', 'C', 'D'],
    ['E', 'F', 'G', 'H'],
])

# vlastnosti polí
print(g.shape)
print(g.ndim)
print(g.size)
print(g.dtype)