python随记

pandas 1.1.5文档

https://pandas.pydata.org/pandas-docs/version/1.1.5/

Numpy和Scipy文档

https://docs.scipy.org/doc/

Scipy1.5.2

https://docs.scipy.org/doc/scipy-1.5.2/reference/

 

todense() 返回矩阵密集表示，https://docs.scipy.org/doc/scipy-1.5.2/reference/generated/scipy.sparse.coo_matrix.todense.html?highlight=todense#scipy.sparse.coo_matrix.todense

argsort() 参数排序，https://pandas.pydata.org/pandas-docs/version/1.1.5/reference/api/pandas.Index.argsort.html?highlight=argsort

drop_duplicates() 删除重复行，https://pandas.pydata.org/pandas-docs/version/1.1.5/reference/api/pandas.DataFrame.drop_duplicates.html?highlight=drop_duplicates

coo_matrix() 构建稀疏矩阵，https://docs.scipy.org/doc/scipy-1.5.2/reference/generated/scipy.sparse.coo_matrix.html?highlight=coo_matrix#scipy-sparse-coo-matrix

coo_matrix()和csc_matrix()区别 https://www.jianshu.com/p/82a054768c99