saaranshM

from sklearn.linear_model import Ridge
ridge_reg = Ridge(alpha=1, solver="cholesky", random_state=42) 
ridge_reg.fit(X, y)

# 'cholesky' is a matrix factorixation techinque used in the closed form equation

saaranshM

from sklearn.linear_model import Lasso
lasso_reg = Lasso(alpha=0.1) 
lasso_reg.fit(X, y)

saaranshM

from sklearn.linear_model import ElasticNet
elastic_net = ElasticNet(alpha=0.1, l1_ratio=0.5, random_state=42)
elastic_net.fit(X, y)