[issue7290] Update 'how do I set a global variable' faq entry

[Ole Laursen]

Ole Laursen <olau at iola.dk> added the comment:

As the reporter of issue 7276, I think it's a clear explanation of this 
phenomonen. I think that maybe you should remove the "New Python 
programmers" in

"New Python programmers are often surprised when they get this error in 
previously working code when they modify it by adding an assignment 
statement somewhere in the body of a function."

so say something like

"It can be a surprise to get this error in previously working code when it 
is modified by adding an assignment statement somewhere in a function 
body."

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nosy: +olau

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue7290>
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