On Sat, 2005-05-07 at 12:56 -0400, Michael wrote:
> Tanja, Bob, Brian,
>
> Many thanks for your help.
>
> And perhaps the way in which I posed the question was misleading. In a
> process I am writing, I was actually trying not to use global variables, as
> I agree with Brian. However, I inadvertantly used a variable within a 'def'
> block that I had used outside of that 'def' block and got 'bitten'. It was
> in tracking my bug down that I became a tad confused.
>
> Actually, now that I know the answer, it all seems so obvious. At least
> until I get bitten by it again! D'OH!
>
> Michael
> ...snip...
(I wonder why nobody mentioned this method?!!)
If you want to use a new variable with the same name as a global one use
default argument (credits goes to the authors of O'REILLY's Learning
Python):
x = 5
def testa(astr):
print astr, x
testa(22)
def testb(astr, x = x):
x = x - 1
print astr, x
testb(22)
def testc(astr):
print astr, x-1
testc(22)
(By the way, this is my first post to PyTutor!)
(Michael, sorry for this duplicate message(s). I didn't realize I
replayed to *only* you until now.)
Ziyad.
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