I'm seeing something which make me think I'm missing something about
how global var's behave. I've defined a global string, right at the
start of my .py file.
outXMLfile = "abc"
I define a class and do a bunch of stuff below that. Then I have
another class, and in it, there is a method 'def' that has:
def OnOutfileButton(self,evt):
(fPath, fName)=os.path.split(fullName)
print "Selected output file: " + fName
outXMLfile = fName
print "output file: " + outXMLfile
Print statements in random other places in the project, show outXMLfile
prints as "abc" however, in this def, it comes out as the same as fName
(e.g. "myfile.xml") If the print line for outXMLfile is before the
assignment to fName, it throws the error:
UnboundLocalError: local variable 'outXMLfile' referenced before
assignment
If I remove the line that says "outXMLfile = fName"
then the print statement gives me the value "abc"
What am I missing? When I assign a value to update my global variable,
it becomes a local variable. If I don't try to update it, it stays
global. I assume it's acting like a constant, though I have a couple of
global lists and I seem to be able to append to them okay.
I guess I can move the variable into the parent class and get at it that
way, but want to understand the error of my ways...
Ross.
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