create a python program that classifies tobacco leaf grade quality with the use of YOLOV4 give me the whole code

import cv2
import numpy as np
import matplotlib.pyplot as plt
from sklearn.cluster import KMeans
from sklearn.preprocessing import StandardScaler
from sklearn.metrics import silhouette_samples
from sklearn.metrics import silhouette_score
from sklearn.metrics import pairwise_distances
from sklearn.metrics import pairwise_distances