too-many-nested-blocks / R1702

Message emitted:

Too many nested blocks (%s/%s)

Description:

Used when a function or a method has too many nested blocks. This makes the code less understandable and maintainable.

Problematic code:

def correct_fruits(fruits):
    if len(fruits) > 1:  # [too-many-nested-blocks]
        if "apple" in fruits:
            if "orange" in fruits:
                count = fruits["orange"]
                if count % 2:
                    if "kiwi" in fruits:
                        if count == 2:
                            return True
    return False

Correct code:

def correct_fruits(fruits):
    if len(fruits) > 1 and "apple" in fruits and "orange" in fruits:
        count = fruits["orange"]
        if count % 2 and "kiwi" in fruits and count == 2:
            return True
    return False

Created by the refactoring checker.