对于刚接触matpltlib的程序员，一般都只使用它的pyplot就够用了，下面是两个非常简单的例子

import numpy as np

import matplotlib as mpl

import matplotlib.pyplot as plt

x = np.linspace(0,10,100)

y = np.sin(x)

cosy = np.cos(x)

siny = y.copy()

plt.scatter(x, cosy, color='red', linestyle='--', label='cos')

plt.plot(x, siny, color='#009900', linestyle='-.', label='sin')

plt.xlim(-1, 11)

plt.ylim(-1.5,1.5)

plt.ylabel('y')

plt.xlabel('x')

plt.legend()

plt.title('test pyplot .....')

plt.show()

x = np.random.normal(0,1,10000)

y = np.random.normal(0,1,10000)

plt.scatter(x,y, alpha=0.5)

plt.show()