How to remove tab indent from several lines in IDLE?

Question

If you want to indent several lines in Python IDLE you just mark the lines and hit Tab. But what if you want to remove the indent from several lines? Shift+Tab does not work for

Answer 1

By default, IDLE has it on Shift-Left Bracket. However, if you want, you can customise it to be Shift-Tab by clicking Options --> Configure IDLE --> Keys --> Use a Custom Key Set --> dedent-region --> Get New Keys for Selection

Then you can choose whatever combination you want. (Don't forget to click apply otherwise all the settings would not get affected.)