how to find the sum of a column in a 2d array code example

Example 1: print column in 2d numpy array

import numpy as np
x=np.arange(25).reshape(5,5)
print(x)
#print(x[:,index_of_column_you_need])
print(x[:,3])

Example 2: numpy array get a value from a 2D array

arrayName[rowNumber, columnNumber]