annoying behavior

[Christopher Barker]

Patrick Maupin wrote:
> But, in Python, instances are "open".  This means that I can add
> attributes to a class instance at _any_ time 

Just to make it really clear what Patrick is saying:

#!/usr/bin/env python2.3

class foo:
     def __init__(self, host):
         self.f()
         self.r = True

     def f(self):
         if self.r:
             print "r is True"
         else:
             print "r is not True"


# now I'll add foo.r, before initialization:
foo.r = False

f = foo("1234")


and this runs just fine:

junk $ ./junk.py
r is not True

If you don't want a dynamic language, don't use Python!

-Chris


-- 
Christopher Barker, Ph.D.
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Chris.Barker at noaa.gov