Matplotlib লেজেন্ডের সারি (row) গুলোর শিরোনাম যোগ করা

import matplotlib.pyplot as plt
import numpy as np

plt.rcParams["figure.figsize"] = [7.50, 3.50]
plt.rcParams["figure.autolayout"] = True

y = np.exp(-np.arange(5))
markers = ["s", "o", "*"]
labels = ["one", "two"]

fig, ax = plt.subplots()
for i in range(6):
    ax.plot(y * i + i / 2., marker=markers[i // 2], label=labels[i % 2])

h, l = ax.get_legend_handles_labels()
ph = [plt.plot([], marker="", ls="")[0]] * 2
handles = ph + h
labels = ["Title 1:", "Title 2:"] + l

plt.legend(handles, labels, ncol=4)
plt.show()