Create a 2D Numpy Array and Accessing elements Python

	import numpy as np
import matplotlib.pyplot as plt

	a = [[11, 12, 13], [21, 22, 23], [31, 32, 33]]

	arr = np.array(a)
print(arr)

	[
  [11, 12, 13],
  [21, 22, 23],
  [31, 32, 33]
]

	print(arr.ndim)
# 2

	print(arr.shape)
# (3, 3)

	print(arr.size)
# 9

Accessing different elements of a Numpy Array

We use the square brackets and the indices corresponding to the element we would like.

	print(arr[1, 2])
# 23

	print(arr[0][0])
# 11

	print(arr[0][0:2])
# [11, 12]