consider-using-any-or-all / C0501

Message emitted:

`for` loop could be `%s`

Description:

A for loop that checks for a condition and return a bool can be replaced with any or all.

Problematic code:

all_even.py:

def all_even(items):
    """Return True if the list contains all even numbers"""
    for item in items:  # [consider-using-any-or-all]
        if not item % 2 == 0:
            return False
    return True

any_even.py:

def any_even(items):
    """Return True if the list contains any even numbers"""
    for item in items:  # [consider-using-any-or-all]
        if item % 2 == 0:
            return True
    return False

Correct code:

all_even.py:

def all_even(items):
    """Return True if the list contains all even numbers"""
    return all(item % 2 == 0 for item in items)

any_even.py:

def any_even(items):
    """Return True if the list contains any even numbers"""
    return any(item % 2 == 0 for item in items)

Configuration file:

[MAIN]
load-plugins=pylint.extensions.for_any_all

Note

This message is emitted by the optional 'consider-using-any-or-all' checker, which requires the pylint.extensions.for_any_all plugin to be loaded.

Created by the consider-using-any-or-all checker.