这个柱形图用matplotlib.pyplot要怎么画，不是太理解

比方说我已经得到了d的数据

import numpy as np
import random
import matplotlib.pyplot as plt

if __name__ == '__main__':

    data1 = [7.2, 6.2, 7, 6, 7.5, 5.5, 7.1, 4.8, 5.2, 8]
    data2 = [6, 8.6, 8.3, 5.3, 7.5, 6.5, 8.9, 5.6, 7.2, 7.4]
    n1 = len(data1)
    n2 = len(data2)
    n = n1 + n2
    data = data1 + data2
    d = []
    sample1 = []
    sample2 = []
    for i in range(1000):
        for j in range(n1):
            sample1.append(data[random.randint(0, n - 1)])
        for k in range(n2):
            sample2.append(data[random.randint(0, n - 1)])
        d.append(np.median(sample1) - np.median(sample2))
        sample1 = []
        sample2 = []
    sorted_d = sorted(d)