สร้างและประเมินโมเดล: รีวิวภาพยนตร์

# Import the required packages
from sklearn.linear_model import LogisticRegression
____

# Define the vector of labels and matrix of features
y = movies.label
X = movies.drop('label', axis=1)

# Perform the train-test split
X_train, X_test, y_train, y_test = ____(X, y, ____=0.2, random_state=42)

# Build a logistic regression model and print out the accuracy
log_reg = ____.____
print('Accuracy on train set: ', log_reg.____(____, ____))
print('Accuracy on test set: ', log_reg.____(____, ____))