利用matplotlib画出y = sin(x)--正弦图

import matplotlib.pyplot as plt
import numpy as np
#导入matplotlib库和rcParams模块，让 matplotlib 可以显示中文
from matplotlib import rcParams
rcParams['font.family'] = 'SimHei'

x = np.linspace(0,2*np.pi,100)
y = np.sin(x)
plt.plot(x,y)

plt.xticks([0,np.pi/2,np.pi,3*np.pi/2,2*np.pi])
plt.title('正弦图')
plt.show()