[XML-SIG] Writing DOM-neutral code

[Fred L. Drake, Jr.]

Juergen Hermann writes:
 > On Wed, 05 Dec 2001 15:36:59 -0500, Rich Salz wrote:
 > 
 > >+    if type(a) == type({}): return a.values()
 > 
 > Totally unrelated: don't do this any more, use isinstance(a, type({})).

  Type objects should never be compared using ==; use "is" if you must
compare type objects.
  Juergen's formula for testing the type of an object is preferred to
checking that an object has a specific type.  If you can tolerate a
Python 2.2-ism, it can be spelled more simply in the case of a
dictionary:

       isinstance(a, dict)


  -Fred

-- 
Fred L. Drake, Jr.  <fdrake at acm.org>
PythonLabs at Zope Corporation