On 6/30/2012 19:37, Chris Angelico wrote: > On Sun, Jul 1, 2012 at 10:08 AM, Ben Finney <ben+pyt...@benfinney.id.au> > wrote: >> I know of no programming language that >> would give a newcomer to Python that expectation. So where is the norm >> you're referring to? > > C, SQL, REXX, and many other languages.
Some others: Lua, Javascript, Ruby, O'Caml. In fact, the only language I can find that uses infix notation (i.e. no Lisp) where it's *not* true that "a < b < c" is equivalent to "(a < b) < c" is Haskell -- and that's because < is not associative and "a < b < c" is a syntax error. (FWIW this is my favorite approach.) You may also want to put Java in there as well, as < is effectively not commutative in that language. (I didn't try C#.) I've been programming in Python for a few years and this is the first time I've seen this. If I had seen that in a program, I'd have assumed it was a bug. Evan
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