04_scoring.py

from sklearn.linear_model import LinearRegression
import numpy as np
from numpy.linalg import inv,lstsq
from numpy import dot, transpose

x = [[6], [8], [10], [14], [18]]
y = [[7], [9], [13], [17.5], [18]]
model = LinearRegression()
model.fit(x,y)

x_test = [[8], [9], [11], [16], [12]]
y_test = [[11], [8.5], [15], [18], [11]]
print ("Score = ",model.score(x_test, y_test))

Very usefull for beginers mam...