Issue 6685: 'toupper' -> 'upper' in cgi doc example explanation.
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@ -213,7 +213,7 @@ The problem with the code is that you should never expect that a client will
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provide valid input to your scripts. For example, if a curious user appends
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another ``user=foo`` pair to the query string, then the script would crash,
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because in this situation the ``getvalue("user")`` method call returns a list
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instead of a string. Calling the :meth:`toupper` method on a list is not valid
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instead of a string. Calling the :meth:`~str.upper` method on a list is not valid
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(since lists do not have a method of this name) and results in an
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:exc:`AttributeError` exception.
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