摘要: 1.the dataframe consist of an ordered collection of columns,each of which can contaion a value of a different type. 2.define:字典形式(键是column)pd.DataFram 阅读全文
posted @ 2019-11-08 20:51 Turing-dz 阅读(156) 评论(0) 推荐(0) 编辑