Stick with the phrase "default parameter value" (GH-21590)
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@ -571,9 +571,9 @@ value --- this is a syntactic restriction that is not expressed by the grammar.
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**Default parameter values are evaluated from left to right when the function
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definition is executed.** This means that the expression is evaluated once, when
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the function is defined, and that the same "pre-computed" value is used for each
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call. This is especially important to understand when a default parameter is a
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call. This is especially important to understand when a default parameter value is a
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mutable object, such as a list or a dictionary: if the function modifies the
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object (e.g. by appending an item to a list), the default value is in effect
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object (e.g. by appending an item to a list), the default parameter value is in effect
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modified. This is generally not what was intended. A way around this is to use
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``None`` as the default, and explicitly test for it in the body of the function,
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e.g.::
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