Terry J. Reedy added the comment: We try to have IDLE work the same as Python (and CPython, where relevant), except where differences are intentional or unavoidable. I am trying to eliminate some unintentional avoidable differences in other issues. However, this one is unavoidable given IDLE's basic design. Also, Steven is correct; see https://docs.python.org/3/library/builtins.html#module-builtins
IDLE executes user code with "exec(code, self.locals)" (run.py, l.351 in 3.5). https://docs.python.org/3/library/functions.html#exec says "If the globals dictionary does not contain a value for the key __builtins__, a reference to the dictionary of the built-in module builtins is inserted under that key." (Doc issus: From the builtins doc and the Jython example, this seems implementation dependent. Steven, does >>> d = {}; exec('', d); d.keys() dict_keys(['__builtins__']) have this result in Jython?) In the IDLE shell, each statement is exec'ed separately. With two statements, __builtins__ is added back before 'min' , while with one statement, it is not. Editor: Run Module execs the entire file at once. I expected print(min) to fail either way, but it works either way. I verified that globals().keys() lost '__builtins__', so I don't know how __builtins__.min is found. I left this open to consider adding a line to https://docs.python.org/3/library/idle.html#idle-console-differences ---------- assignee: -> terry.reedy components: +Documentation stage: -> needs patch title: IDLE behaves differently that the standard interpreter when someone types `del __builtins__` -> IDLE behaves differently than python on `del __builtins__` type: -> behavior versions: +Python 3.4, Python 3.5, Python 3.6 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue25564> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
