[Tutor] calling global in funtions.

[eryksun]

On Wed, Feb 26, 2014 at 8:45 AM, Steven D'Aprano <steve at pearwood.info> wrote:
>> <input>:4: SyntaxWarning: name 'a' is assigned to before global declaration
>
> This is just a warning. It is STRONGLY RECOMMENDED that you put the
> global declaration at the top of the function, but it is not compulsary.
> If you put it somewhere else, you will get a warning, but the function
> will still work.

The declaration doesn't have to go at the top to avoid the warning. A
variable has to be declared global before it's used or assigned.
However, it's a good practice to put it at the top of the function
definition. This is for your own good, in case you accidentally try to
use a name as both local and global in the same function. All usage
will be global, which will probably be a bug.