return True if the current distribution is running on debian like OS.

def is_archlinux():
    """return True if the current distribution is running on debian like OS."""
    if platform.system().lower() == 'linux':
        if platform.linux_distribution() == ('', '', ''):
            # undefined distribution. Fixed in python 3.
            if os.path.exists('/etc/arch-release'):
                return True
    return False