python boxplot add legend code example
Example: python boxplot legend
import matplotlib.pyplot as plt
import numpy as np; np.random.seed(1)
data1=np.random.randn(40,2)
data2=np.random.randn(30,2)
fig, ax = plt.subplots()
bp1 = ax.boxplot(data1, positions=[1,4], notch=True, widths=0.35,
patch_artist=True, boxprops=dict(facecolor="C0"))
bp2 = ax.boxplot(data2, positions=[2,5], notch=True, widths=0.35,
patch_artist=True, boxprops=dict(facecolor="C2"))
ax.legend([bp1["boxes"][0], bp2["boxes"][0]], ['A', 'B'], loc='upper right')
ax.set_xlim(0,6)
plt.show()