The built-in function
sorted and sequence method
sort require that the elements in the sequence be of types that can be compared: they will fail, for example, if a list contains a mixture of strings and numbers. However, it is frequently the case that a list contains numbers and the special value,
None (perhaps denoting missing data). Devise a way to sort such a list by passing a
lambda function in the argument
None values should end up at the end of the sorted list.
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