Apply consistent coding style

[palasso]

Description

Apply to the whole of the project consistent coding style.

Examples

• import x.y ---> from x import y
• ( ) ---> ()
• if (foo): ---> if foo:
• Separate functions with more spaces
• Use consistently i += 1 instead of i = i + 1
• Don't use redundant parentheses or semicolons
• Generally make things more readable

If you see anything else please add it to the examples.