散点密集图绘制【python】

import numpy as np
import matplotlib.pyplot as plt

def draw_R_centrality():
    kf = pd.read_csv("相对路径", delimiter=',', names=['node', 'value'])
    xlist = list(kf['value'])

    # Generate fake data
    x = xlist
    y =  ylist
    z = zlist
    fig, ax = plt.subplots()
    plt.scatter(x, y, c=z, s=50, cmap='Spectral_r')
    plt.colorbar()
    plt.show()