Question: I have a list of list, such as

```
T =[[0.10113], [0.56325], [0.02563], [0.09602], [0.06406], [0.04807]]

```

I would like to find the total sum of these numbers.

I am new to python programming, when I try a simple `int(T[1])` conversion, I get error 

```
TypeError: int() argument must be a string or a number, not 'list'

```

I appreciate any input.

Answer: 
easy:

```
sum(x[0] for x in T)

```

You're done :)

---

Of course, you could use 

```
import itertools
sum(itertools.chain.from_iterable(T))

```

too. This would work if your sublists had more than 1 element each.
```
>>> T =[[0.10113], [0.56325], [0.02563], [0.09602], [0.06406], [0.04807]]
>>> sum(x[0] for x in T)
0.8981600000000001

```