[Zope] Verrryy strange behavior (NameError)

[Randall F. Kern]

This is just normal python.  When you want to assign to a global
variable inside a function, you have to declare the variable as a
global:

_stateVariable =3D 0

class
    def func()
>>>     global _stateVariable
        _stateVariable =3D 1

-Randy

-----Original Message-----
From: Andrew Athan [mailto:aathan-zope-list%REMOVEME@memeplex.com]
Sent: Friday, April 06, 2001 1:01 PM
To: zope@zope.org
Subject: RE: [Zope] Verrryy strange behavior (NameError)


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I'm sending this in case my sagga helps some other relative newcomer.
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I suspect this problem has something to do with python1.5.2's (or Zope's
hackery of...) handling of namespaces within modules & classes.  What I
needed was access to a "static global" variable to store some state for
me.  (No, I haven't looked into threads, their existance, or such issues
in Zope).  What I was doing was:
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_stateVariable=3D0
....
class ....
def fun()
   ....
   _stateVariable=3D1
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and this was causing me all kinds of grief.  By changing the code to
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_stateVariable =3D {'a':0}
...
class ...
def fun()
   ...
   _stateVariable['a']=3D1
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everything works just fine.  Now, can someone give me the shortcut to
understand WHHHYYY?
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A.