Python：画图（坐标描述，title，图大小，曲线标号）

import numpy as npimport matplotlib.pyplot as pltx=np.linspace(0,10,100)y=np.sin(x)y1=np.cos(x)plt.figure(figsize=(8,4)) #整个现实图（框架）的大小plt.plot(x,y,'r-o',label="$sin(x)$",linewidth=1)plt.plot(x,y1,'b-o',label="$cose(x)$",linewidth=1)plt.xlabel('Time(s)')plt.ylabel("Volt")plt.title("Python chart")plt.show()