| > > Sure. Cosines are a monadic operation and the monadic '+' is a NOP, so | > > why shouldn't I define +45 to return cosine of 45, (presuming I needed | > > lots of cosines). I'd even let you define your own operators. Lots of | > > programmers really liked '++' and '--', for examples.
One cannot change builtin types. One can subclass most of them and override most if not all the special methods. import math as m class trigint(int): def __pos__(self): return m.cos(m.pi*self/180.0) print +trigint(45) >>> 0.707106781187 Of course, for this case, def cosi(degrees): return m.pi*degrees/180.0 would probably be more sensible. There is and is no prospect of being able to add operators. Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list