show f1 score use matplotlib in python

show_score.py

import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D

def f1_score(precision, recall):
    return precision*recall/(precision+recall)

x = np.arange(1e-3, 1, 1e-3)
y = np.arange(1e-3, 1, 1e-3)
X, Y = np.meshgrid(x, y)

Z = f1_score(X, Y)

fig = plt.figure()
ax = Axes3D(fig)
ax.plot_surface(X, Y, Z)
plt.show()