Question

Point out the wrong statement.

a.

to_array. append can accept scalar values or any 2-dimensional sequence

b.

Two kinds of SparseIndex are implemented

c.

The integer format keeps an arrays of all of the locations where the data are not equal to the fill value

d.

None of the mentioned

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Answer: (a).to_array. append can accept scalar values or any 2-dimensional sequence

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