import numpy as np import matplotlib.pyplot as plt import pandas as pd

dataset = pd.read_csv('/work/Salary_Data.csv') X = dataset.iloc[:, :-1].values y = dataset.iloc[:, -1].values

from sklearn.model_selection import train_test_split X_train, X_test, y_train, y_test = train_test_split(X, y, test_size = 0.2, random_state = 0)

from sklearn.linear_model import LinearRegression regressor = LinearRegression() regressor.fit(X_train, y_train)

y_pred = regressor.predict(X_test)

plt.scatter(X_train, y_train, color = 'red') plt.plot(X_train, regressor.predict(X_train), color = 'blue') plt.title('Salary vs Experience (Training set)') plt.xlabel('Years of Experience') plt.ylabel('Salary') plt.show()

plt.scatter(X_test, y_test, color = 'red') plt.plot(X_train, regressor.predict(X_train), color = 'blue') plt.title('Salary vs Experience (Test set)') plt.xlabel('Years of Experience') plt.ylabel('Salary') plt.show()