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Use normal list constructor in List.__new__() - #7257
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Calling `list.__new__()` without arguments and then `list.__init__()` with arguments on the resulting object is not guaranteed to work - the fact that `list.__new__()` doesn't refer to its arguments (and therefore doesn't strictly require them to be the same as the arguments to `__init__()`) is an implementation detail. It is safer to just call `list(*args, **kwargs)` instead.
eric-wieser
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Jul 28, 2021
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approved these changes
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thank you for the patch @gmarkall -- thank you for the review @eric-wieser !
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Calling
list.__new__()without arguments and thenlist.__init__()with arguments on the resulting object is not guaranteed to work - the fact thatlist.__new__()doesn't refer to its arguments (and therefore doesn't strictly require them to be the same as the arguments to__init__()) is an implementation detail.It is safer to just call
list(*args, **kwargs)instead.With thanks to @eric-wieser (ref: #7251 (comment))