fig, ax = plt.subplots(figsize=(10.8, 6.4))
width = 0.35 # the width of the bars
h1 = ax.bar(range(len(x)), y, width)#画直方图
yrange = np.arange(0, 0.5, 0.1)
ax.set_yticks(yrange)
ax.set_xticks(range(len(x)))#x轴坐标个数
ax.set_xticklabels(x, rotation=45, fontsize='small')#x轴坐标标记
ax.set_title(str(off_days) + ' days')
ax.set_ylabel('新闻数量占比')#坐标轴名称
ax2 = plt.twinx() #创建新的坐标轴与原坐标轴共用x轴
h2, = ax2.plot(range(len(x)), y_sequential, 'bo', linestyle='-', markersize=2, linewidth=1)#画线
ax2.set_yticks(np.arange(-1, 1, 0.2))
ax2.set_ylabel('同比')
plt.legend(handles=[h1, h2],
labels=['新闻数量占比', '新闻数量占比同比'],
loc='upper right', fontsize=7)#标识
fig.savefig(fig_path)#保存图像
