Merge pull request #2102 from RuiPereira/fixlog Fix logging on interactive shell. Add a missing string format code in `init_logs()` and move `init_logstart()` after `init_magics()`, to fix dependency issues. Fixes the case where a log file is given in `ipython_config.py`, eg: ```python # Start logging to the given file in append mode. import os from time import strftime f = os.path.join(c.TerminalIPythonApp.ipython_dir, strftime('%Y-%m-%d')+".py") c.TerminalInteractiveShell.logappend = f ``` which completely breaks in current `master` code.