Martin Panter added the comment: For the record, this is my interpretation of Pavel’s demo: If you press a key (other than lowercase “q”) or resize the terminal, it displays the terminal dimensions in the top-left corner. Without Readline, the dimensions are updated when the terminal resizes. When Readline is used (interactive mode, or simply “import readline”), the reported dimensions are static, which I understand is the bug. Documentating this quirk may be a good start. ---------- assignee: -> docs@python components: +Documentation nosy: +docs@python, martin.panter stage: test needed -> needs patch versions: +Python 2.7, Python 3.5, Python 3.6 -Python 3.3 _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue2675> _______________________________________