Code A:

```
numbers = [2, -1, 79, 33, -45]
negative_doubled = [num * 2 for num in numbers if num < 0]
print(negative_doubled) # output is: [-2, -90]

```

Code B:

```
numbers = [2, -1, 79, 33, -45]
doubled = [num * 2 if num < 0 else num * 3 for num in numbers ]
print(doubled) # output is: [6, -2, 237, 99, -90]

```

As you can see the position of the `if` statements are different. In code A, the `if` statement positioned after the for loop statement.

Why don't they write the code like this? I would find it more intuitive.

```
numbers = [2, -1, 79, 33, -45]
negative_doubled = [num * 2 if num < 0 for num in numbers] # SyntaxError
print(negative_doubled) 

```

(As you know this placement is a syntax error.)

Is there any case where it could be a problem?