Convert list with one element to list with three elements -Python

Question

How can I convert a list wit one element like this: [[1.0, 0.0, nan]] into a real list with lenght 3

convert `[[1.0, 0.0, nan]]`(lenght=1) into [1.0, 0.0, nan]`(lenght=3)

Answer 1

Simply access the zeroth index of your list which will give you an list of length 3

data=data[0] should do the job

print(data) // [1.0, 0.0, nan]

Answer 2

Just access the first value:

a = [[1.0, 0.0, nan]]
b = a[0]