I am importing a list of strings into python from a text file. When I print the list to check it has been done properly, I see it is double bracketed.

From what I understand this means it multidimensional but this is not what I want. How do I prevent this?

An example of my code is shown below.

```
test_list_a_file = "path/to/test_list_a_file"

with open(test_list_a_file, 'r') as openfile:
    test_list_a = [line.split() for line in openfile.readlines()]

print(test_list_a[0:4])

```

This returns...

```
[['A'], ['B'], ['C'], ['D']]

```

When I manually create my list in python to see what happens:

```
test_list_b = ['A', 'B', 'C', 'D', 'E', 'F']
print(test_list_b[0:4])

```

It works just fine...

```
['A', 'B', 'C', 'D']

```

The file `test_list_a_file` looks like this:

```
A
B
C
D
E
F

```

Whats wrong with the way I am importing it?