Re: problem updating variable in a module

[Tim Rowe]

2008/9/24 <du**********@gmail.com>:

Hi,

I've a problem updating my variable in a module.

In my main program, I call a function from mod1 to update a variable of mod1
As soon as I update this varibale, I check it back in the mail program but
it the variable from mod1 does not get updated.

main Program:
****************
import mod1
a = 20
mod.update(a)
print mod.a <---- does not print anything

mod1
********
a = 10
def update(someInt):
global a
a = someInt
print a <---- this does actually print a = 20

I'm surprised it runs at all -- as far as I can see "mod" in
"mod.update(a)" and "print mod.a" is not defined. Did you mean "mod1"?
If I change it to that, both print statements print "20" as I'd
expect.

I take it you do have a *really* good reason to use a global?

--
Tim Rowe