Convert list of lists into a normal list

Question

I have a list of lists:

a = [['0.06'], ['0.54'], ['0.61']] 

I want to convert this list into normal list like this:

a = [0.06, 0.54, 0.61]

How can I do it it

Answer 1

Using a list comprehension:

>>> a = [['0.06'], ['0.54'], ['0.61']]
>>> [float(x) for [x] in a]
[0.06, 0.54, 0.61]