On Mon, Oct 18, 2021 at 9:22 PM Mathew Elman <mathew.el...@ocado.com> wrote: > > I don't know if this has been suggested before, or if this is outlandishly > impossible (though I would be surprised if it was), so apologies in advance > if so.
As stated, it basically is.... but the cool thing about crazy ideas is, there's often a very similar one that CAN be implemented! What you're basically asking for is a special type of operator. Python ships with operators like "*" meaning multiplication, where you write the operator between the two values. You can create your own using some very simple abuses of syntax and a nice library. > This sort of signature is particularly annoying for boolean checks like > `isinstance` (N.B. I am _not_ suggesting changing any builtins), which one > could wrap with: > > def is_(obj)_an_instance_of_(type): > return isinstance(obj, type) > > For precedence in other languages, this is similar to curried functions in > functional languages e.g Haskell, especially if each part of a function were > to be callable, which would be up for debate. How about this: https://pypi.org/project/infix/ @div_infix def instance_of(obj, type): return isinstance(obj, type) >>> 42 /instance_of/ int True It's not precisely what you were asking about, but it works on all current versions of Python, and allows a lot of flexibility. ChrisA _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/GSSOPCS3NRQASC2ZYNY33YYKA74XFYXG/ Code of Conduct: http://python.org/psf/codeofconduct/
