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Alex Rivera
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How do I create or use a global variable inside a function? How do I use a global variable that was defined in one function inside other functions? Failing to use the global keyword where appropriate often causes UnboundLocalError . The precise rules for this are explained at UnboundLocalError on local variable when reassigned after first use . Generally, please close other questions as a duplicate of that question when an explanation is sought, and this question when someone simply needs to know the global keyword.
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