Steve R. Hastings wrote: > I have been studying Python recently, and I read a comment on one > web page that said something like "the people using Python for heavy math > really wish they could define their own operators". The specific > example was to define an "outer product" operator for matrices. (There > was even a PEP, number 211, about this.) > > I gave it some thought, and Googled for previous discussions about this, > and came up with this suggestion: > > User-defined operators could be defined like the following: ]+[ > > I'm not any kind of language design expert, but this seems to me like a > syntax that would be easy for Python to recognize. Because the square > braces are reversed from the usual "[]" order, this should not look like > any currently-valid code.
Is [a,b]+[c] the concatenation of two lists, or a single two-element list containing a and b ]+[ c? > And square braces, IMHO, do not fail the "low-toner printout" test. They do. Just yesterday I printed some code in which some of the square braces didn't show up. -- http://mail.python.org/mailman/listinfo/python-list