luofeiyu <elearn2...@gmail.com> writes: > >>> help(int.__init__) > Help on wrapper_descriptor: > > __init__(self, /, *args, **kwargs) > Initialize self. See help(type(self)) for accurate signature. > > what is the "/" mean in __init__(self, /, *args, **kwargs) ?
I don't know, I haven't seen that before. It is confusing. At least it is acknowledged (“See [elsewhere] for accurate signature”) to be unhelpful. I suspect this is an artefact of the impedance mismatch between Python function signatures and the implementation of ‘int’ in C code. The “/” may be a placeholder for something the C implementation requires but that Python's function signature expectation doesn't allow. Perhaps Python 3's keyword-only arguments may one day help functions like that get implemented with a more useful signature, but I'm not holding my breath for that. -- \ “Religious faith is the one species of human ignorance that | `\ will not admit of even the *possibility* of correction.” —Sam | _o__) Harris, _The End of Faith_, 2004 | Ben Finney -- https://mail.python.org/mailman/listinfo/python-list
