import numpy as np
from scipy import stats
import matplotlib.pyplot as plt

plt.rcParams['font.sans-serif'] = ['SimHei']  # 用来正常显示中文标签
plt.rcParams['axes.unicode_minus'] = False  # 用来正常显示负号

x = np.linspace(-5, 5, 100000)
y = stats.norm.pdf(x, 0, 1)
plt.plot(x, y, c="red")
plt.title("正态分布的概率密度函数")
# plt.tight_layout()
# plt.savefig("正态分布的概率密度函数", dpi=300)
plt.show()