Empty sets and frozensets are also false.
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@ -1021,9 +1021,9 @@ Boolean operations have the lowest priority of all Python operations:
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In the context of Boolean operations, and also when expressions are
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used by control flow statements, the following values are interpreted
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as false: \code{False}, \code{None}, numeric zero of all types, empty
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sequences (strings, tuples and lists), and empty mappings (dictionaries).
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All other values are interpreted as true.
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as false: \code{False}, \code{None}, numeric zero of all types, and empty
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strings and containers (including strings, tuples, lists, dictionaries,
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sets and frozensets). All other values are interpreted as true.
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The operator \keyword{not} yields \code{True} if its argument is false,
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\code{False} otherwise.
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