如何使用 Matplotlib 绘制直方图：
import matplotlib.pyplot as plt
import numpy as np
from matplotlib import colors
from matplotlib.ticker import PercentFormatter
# Create a random number generator with a fixed seed for reproducibility
rng = np.random.default_rng(19680801)
要生成一维直方图，我们只需要一个数字向量。对于二维直方图，我们需要第二个向量。我们将在下面生成两者，并显示每个向量的直方图。
N_points = 100000
n_bins = 20
# Generate two normal distributions
dist1 = rng.standard_normal(N_points)
dist2 = 0.4 * rng.standard_normal(N_points) + 5
fig, axs = plt.subplots(1, 2, sharey=True, tight_layout=True)
# We can set the number of bins with the *bins* keyword argument.
axs[0].hist(dist1, bins=n_bins)
axs[1].hist(dist2, bins=n_bins)
