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Brother, your formal parameter name list has the same name as the built-in type list. So the list at this time is no longer a list class. It is a local variable name.
Rename the list in your function, becauselistis a built-in variable and a reference to the list type
list
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Brother, your formal parameter name list has the same name as the built-in type list. So the list at this time is no longer a list class. It is a local variable name.
Rename the list in your function, because
listis a built-in variable and a reference to the list type