Compare two numpy arrays row-wise ValueError

Question

I want to compare two NumPy arrays row-wise and return the number of same rows.

If i use the code below:

a=np.array([[1,2],[3,4]])
b=np.         


        

Answer 1

What about something like this:

import numpy as np

a = np.array([['a', 'b'], ['c', 'd'],\
                  ['e', 't'], ['a', 'b'], ['a', 'b']])
[['a' 'b']
 ['c' 'd']
 ['e' 't']
 ['a' 'b']
 ['a' 'b']]

b = np.array([['a','b'],['e','t'],['r','t']])
[['a' 'b']
 ['e' 't']
 ['r' 't']]

shared_rows=0

for row in b:
    temp=a==row
    shared_rows+=sum(np.sum(temp, axis=1)==a.shape[1])

print(shared_rows)
4