Can anyone know the code of python to put two frames in a single window output specifically to use it in opencv

edit

Images are numpy arrays. Therefore you can use numpy capabilities to create an image contaning two images. The images to stack/concatenate should have the same size.

# Import required packages:
import cv2
import numpy as np

# Load images
image_1 = cv2.imread('lenna.png')
image_2 = image_1.copy()

# Eliminate blue and read channels:
image_2[:, :, 0] = 0
image_2[:, :, 2] = 0

# Stack horizontally:
# Equivalent to np.concatenate(tup, axis=1)
# images_1_2_h = np.concatenate((image_1, image_2), axis=1)
images_1_2_h = np.hstack((image_1, image_2))

# Stack vertically:
# Equivalent to np.concatenate(tup, axis=0)
# images_1_2_v = np.concatenate((image_1, image_2), axis = 0)
images_1_2_v = np.vstack((image_1, image_2))

# Show images:
cv2.imshow("images_1_2_h", images_1_2_h)
cv2.imshow("images_1_2_v", images_1_2_v)

# Wait until a key is pressed:
cv2.waitKey(0)

# Destroy all created windows:
cv2.destroyAllWindows()