shikhanshu questions

• How to make vim understand environment variables using curly braces
• Regular expression - replace all spaces in beginning of line with periods
• Pandas - Get unique values from column along with lists of row indices where they appear
• VIM: How to open another file from same location as an already open file
• How does pagination of results in databases work?
• Right order of doing feature selection, PCA and normalization?
• Python argparse : How can I get Namespace objects for argument groups separately?

shikhanshu answers