PyTorch preferred way to copy a tensor

https://stackoverflow.com/questions/55266154/pytorch-preferred-way-to-copy-a-tensor

 Use .clone().detach() (or preferrably .detach().clone())

If you first detach the tensor and then clone it, the computation path is not copied, the other way around it is copied and then abandoned. Thus, .detach().clone() is very slightly more efficient.-- pytorch forums

as it's slightly fast and explicit in what it does.

test1

Flatten a Pandas DF by column name

Use melt function 

https://stackoverflow.com/questions/38612154/pandas-flatten-a-dataframe-to-a-single-column

Plotly plot pandas data frame by index

 Plotly plot pandas data frame by index

https://stackoverflow.com/questions/57178206/use-pandas-index-in-plotly-express

 

Merge two data frames by index

https://stackoverflow.com/questions/40468069/merge-two-dataframes-by-index