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)

`data = data[0]`? Love how consistent you are with the "lenght" typo =) One of my favorites, as well. — user2390182, Feb 10 '21 at 16:01
check this https://stackoverflow.com/questions/17485747/how-to-convert-a-nested-list-into-a-one-dimensional-list-in-python out. — Rustam Garayev, Feb 10 '21 at 16:02
You could use a list comprehension as well as the way flakes answered. — JackTheCrab, Feb 10 '21 at 16:04

score 2 · Answer 1 · answered Feb 10 '21 at 16:02

2

Just access the first value:

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

answered Feb 10 '21 at 16:02

flakes

why excactly i had to do this ? – 124747chdhsgxj Feb 10 '21 at 16:30
@124747chdhsgxj `a` is a list of lists. To access the first list in the list of lists, you would use the square bracket `list[i]` accessor. See https://www.programiz.com/python-programming/list – flakes Feb 10 '21 at 16:32

score 0 · Accepted Answer · answered Feb 10 '21 at 16:06

0

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]

answered Feb 10 '21 at 16:06

Utpal Dutt

2 Answers2