To focus on the need to rename of swap column names with a pre-existing record, I will develop a new sample dataframe df with Preliminary column names and unrelated new column names. this isn't the problem OP was going through and your difficulty is While using the makefile unique for https://stackballgamewalkthrough52738.izrablog.com/36963619/not-known-factual-statements-about-stack-ball-game-download