ম্যাটপ্লটলিব legend

import matplotlib.pyplot as plt

figure, axes = plt.subplots()

axes.plot(
    [1, 2, 3],
    [2, 4, 6],
    label="Python"
)

axes.plot(
    [1, 2, 3],
    [3, 5, 7],
    label="PHP"
)

axes.legend()

plt.show()