Re: What is the Difference Between quit() and exit() commands in Python?
Hongyi Zhao wrote: > What is the Difference Between quit() and exit() commands in Python? They are instances of the same type >>> import inspect >>> type(quit) is type(exit) True >>> print(inspect.getsource(type(quit))) class Quitter(object): def __init__(self, name, eof): self.name = name self.eof = eof def __repr__(self): return 'Use %s() or %s to exit' % (self.name, self.eof) def __call__(self, code=None): # Shells like IDLE catch the SystemExit, but listen when their # stdin wrapper is closed. try: sys.stdin.close() except: pass raise SystemExit(code) There is no difference, except for the name attribute and the repr() text: >>> exit.name, exit.eof, exit ('exit', 'Ctrl-D (i.e. EOF)', Use exit() or Ctrl-D (i.e. EOF) to exit) >>> quit.name, quit.eof, quit ('quit', 'Ctrl-D (i.e. EOF)', Use quit() or Ctrl-D (i.e. EOF) to exit) -- https://mail.python.org/mailman/listinfo/python-list
Re: What is the Difference Between quit() and exit() commands in Python?
On 9/16/19, Hongyi Zhao wrote: > > What is the Difference Between quit() and exit() commands in Python? They're different instances of the Quitter class, which is available if site.py is imported (i.e. not with the -S command-line option). They're created by site.setquit(): def setquit(): """Define new builtins 'quit' and 'exit'. These are objects which make the interpreter exit when called. The repr of each object contains a hint at how it works. """ if os.sep == '\\': eof = 'Ctrl-Z plus Return' else: eof = 'Ctrl-D (i.e. EOF)' builtins.quit = _sitebuiltins.Quitter('quit', eof) builtins.exit = _sitebuiltins.Quitter('exit', eof) exit(code) or quit(code) closes sys.stdin and raises SystemExit(code): >>> quit.__class__ >>> print(inspect.getsource(type(quit))) class Quitter(object): def __init__(self, name, eof): self.name = name self.eof = eof def __repr__(self): return 'Use %s() or %s to exit' % (self.name, self.eof) def __call__(self, code=None): # Shells like IDLE catch the SystemExit, but listen when their # stdin wrapper is closed. try: sys.stdin.close() except: pass raise SystemExit(code) For example: >>> try: ... quit(42) ... except BaseException as e: ... print(repr(e)) ... SystemExit(42,) >>> sys.stdin.closed True Alternatively, sys.exit is a builtin function that's equivalent to `raise SystemExit(code)` but does not close sys.stdin. For example: >>> try: ... sys.exit(42) ... except BaseException as e: ... print(repr(e)) ... SystemExit(42,) >>> sys.stdin.closed False -- https://mail.python.org/mailman/listinfo/python-list
RE: What is the Difference Between quit() and exit() commands in Python?
Hi exit (http://docs.python.org/2/library/constants.html#exit"; rel="noreferrer) is an alias for quit (or vice-versa). They exist together simply to make Python more user-friendly. please refer: https://stackoverflow.com/questions/19747371/python-exit-commands-why-so-many-and-when-should-each-be-used (https://stackoverflow.com/questions/19747371/python-exit-commands-why-so-many-and-when-should-each-be-used) -ursprüngliche Nachricht- Von: hongyi.z...@gmail.com (mailto:hongyi.z...@gmail.com) Gesendet: 16.09.2019 14:35 Uhr An: python-list@python.org (mailto:python-list@python.org) Betreff: What is the Difference Between quit() and exit() commands in Python? What is the Difference Between quit() and exit() commands in Python? -- mail.python.org/mailman/listinfo/python-list (https://mail.python.org/mailman/listinfo/python-list"; target="_blank" rel="noopener) -ursprüngliche Nachricht Ende- -- https://mail.python.org/mailman/listinfo/python-list