Counterintuitive Python behavior

[Greg Ewing]

Steve Holden wrote:
> 
> I don't feel you have yet even adequately *defined* "conceptual sameness",
> so it's surely premature to assert that it's missing from the language.

The definition he seems to have in mind is something like

  def eq(a, b):
    if is_immutable(a) and is_immutable(b):
      return a == b
    else:
      return a is b

for some suitable definition of is_immutable.

-- 
Greg Ewing, Computer Science Dept, University of Canterbury,	  
Christchurch, New Zealand
To get my email address, please visit my web page:	  
http://www.cosc.canterbury.ac.nz/~greg