第三步怎么敲哇，实在不会画图，怎么选择数据呢Python要挂掉了
参考这个，pandas绘图，实际用的是matplotlib。https://blog.csdn.net/juzicode00/article/details/111935845?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522165642300716782389441270%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fblog.%2522%257D&request_id=165642300716782389441270&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~blog~first_rank_ecpm_v1~rank_v31_ecpm-1-111935845-null-null.nonecase&utm_term=pandas&spm=1018.2226.3001.4450
