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Simple Names: Global Unless Assigned
Unqualified simple names follow the LEGB lexical scoping rule outlined for functions in Chapter 17:
Assignment (X = value)
Makes names local: creates or changes the name X in the current local scope, unless declared global.Reference (X)
Looks for the name X in the current local scope, then any and all enclosing functions, then the current global scope, then the built-in scope.请支持我们，让我们可以支付服务器费用。
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