3 ms·

Main performance tip is to find ways not to copy data generally: - use .loc[] - use inplace=True

• audiometry 9y ago
  can you elaborate on `using .loc[]` -- what is the defective approach it replaces?
  • sceadu 9y ago
    I would assume using df[['colA', 'colB']] for projection/column selection?
    • sceadu 9y ago
      Also, I would caution about using inplace=True. See: https://tomaugspurger.github.io/method-chaining.html https://tomaugspurger.github.io/method-chaining.html (ctrl+F: "Inplace?")