How to remove tab indent from several lines in IDLE?

If you're using IDLE, you can use Ctrl+] to indent and Ctrl+[ to unindent.

If you're using IDLE, and the Norwegian keyboard makes Ctrl-[ a problem, you can change the key.

1. Go Options->Configure IDLE.
2. Click the Keys tab.
3. If necessary, click Save as New Custom Key Set.
4. With your custom key set, find "dedent-region" in the list.
5. Click Get New Keys for Selection.
6. etc

I tried putting in shift-Tab and that worked nicely.

Depends on your editor.

Have you tried Shift+Tab?

in pythonwin,

SHIFT + TAB works

For IDLE, select the lines, then open the "Format" menu. (Between "Edit" and "Run" if you're having trouble finding it.) This will also give you the keyboard shortcut, for me it turned out that dedent shortcut was "Ctrl+["