Categorical values in numeric format

import numpy as np
import pandas as pd
from sklearn.preprocessing import LabelEncoder
df=pd.read_csv('Downloads/categorical_data.csv')
print(df)

import numpy as np
from sklearn.preprocessing import LabelEncoder
df=pd.read_csv('Downloads/categorical_data.csv')

#transfer data into numerical format
label_encoder=LabelEncoder()
n=label_encoder.fit_transform(df['variety'])
print(n)