为什么python plt.plot 画图起点不是零点答:X = np.linspace(-np.pi,+np.pi,256)Y = np.sin(X)# Actual plottingfig = plt.figure(figsize=(8,6), dpi=72,facecolor="white")axes = plt.subplot(111)axes.plot(X,Y, color = 'blue', linewidth=2, linestyle="-")axes.set_xlim(X.min(),X.max())axes.set_ylim(1.01*...