Variable name has a typo, but code still works. Why?

2006-05-31 Thread mateus 
print "hello world"

I have a nested loop where the outer loop iterates over key value pairs
of a dictionary and the inner loop iterates over a list each list of
which is a mapped value from the dictionary

def showReport(self):
for dev, sessions in self.logger.items():
for tree in session:
self.addTestItem(self, tree)

What I don't understand is why this executes w/o any problems when
"sessions" was spelled as plural (sessionS) while later being spelled
in the singular (session).

Is there some type of name resolution of local variables where Python
makes assumptions?

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Re: Variable name has a typo, but code still works. Why?

2006-05-31 Thread mateus 

mateus wrote:
> print "hello world"
>
> I have a nested loop where the outer loop iterates over key value pairs
> of a dictionary and the inner loop iterates over a list each list of
> which is a mapped value from the dictionary
>
> def showReport(self):
> for dev, sessions in self.logger.items():
> for tree in session:
> self.addTestItem(self, tree)
>
> What I don't understand is why this executes w/o any problems when
> "sessions" was spelled as plural (sessionS) while later being spelled
> in the singular (session).
>
> Is there some type of name resolution of local variables where Python
> makes assumptions?

A few specs that I forgot to mention.

Version: python-2.4.2
OS: Librix (Gentoo (Linux))

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Re: Variable name has a typo, but code still works. Why?

2006-05-31 Thread mateus 
Well, one by one I checked for the presence of both sessions and
session in the globals dictionary (within showReport(), but outside of
the loops).

Neither one of them existed previously, thus and I received the
exception about them not being found:


  File "/home/mjpl/hct/repository/hct/tutoo.py", line 219, in loadNext
self.loadStage(self.cur+1)
  File "/home/mjpl/hct/repository/hct/tutoo.py", line 195, in loadStage
self.stageFrame.show()
  File
"/home/mjpl/hct/repository/hct/stages/resultadoframe/resultadoframe.py",
line 17, in show
self.listView.showReport()
  File "/home/mjpl/hct/repository/hct/widgets/deviceview.py", line 54,
in showReport
print globals()['session']
KeyError: 'session'

So, I tried using other variable names for the outer and inner loops
with the only difference of one letter.  I then got the expected
message about the variable name not being encountered.

I returned the variable names to 'sessions' and 'session' respectively,
and I got the same error about the name 'session' not being founded.  I
can only assume that there was some type of cache problem.  Could it
have been in the .pyc?  I thought that was recompiled every time a .py
is run/set to be interpreted.  I'm sure I got that last sentence wrong.

[EMAIL PROTECTED] wrote:
> mateus wrote:
> > print "hello world"
> >
> > I have a nested loop where the outer loop iterates over key value pairs
> > of a dictionary and the inner loop iterates over a list each list of
> > which is a mapped value from the dictionary
> >
> > def showReport(self):
> > for dev, sessions in self.logger.items():
> > for tree in session:
> > self.addTestItem(self, tree)
> >
> > What I don't understand is why this executes w/o any problems when
> > "sessions" was spelled as plural (sessionS) while later being spelled
> > in the singular (session).
> >
> > Is there some type of name resolution of local variables where Python
> > makes assumptions?
>
> I've never heard of a rule disregarding ending 's'es and I really doubt
> one
> exists.
>
> Are you sure session isn't a global variable? You can check using
> globals().

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