Reproducing this bug with plain Emacs 1. Start emacs without any .emacs or .emacs.d/init.el files 2. Start Inferior python mode by M-x run-python 3. Enter first line of multi-line statement, press Enter and then start entering second line >>> for x in range(10): ...pri 4. Now press C-M-i, it will complete it to `print`, then enter x so the second line looks like ... print x 5. Now press Enter instead of a ... prompt you should get an error >>> for x in range(10): ... print x File "", line 1 print x ^ IndentationError: unexpected indent >>> ========================================== Evgeniy N. Sharapov Phone: (630) - 779 - 3208