Python TypeError: объект типа NoneType не имеет решения len ()

–ú–µ—Ç–æ–¥ len () —Ä–∞–±–æ—Ç–∞–µ—Ç —Ç–æ–ª—å–∫–æ —Å –ø–æ–≤—Ç–æ—Ä—è–µ–º—ã–º–∏ –æ–±—ä–µ–∫—Ç–∞–º–∏, —Ç–∞–∫–∏–º–∏ –∫–∞–∫ —Å—Ç—Ä–æ–∫–∏, —Å–ø–∏—Å–∫–∏ –∏ —Å–ª–æ–≤–∞—Ä–∏. –≠—Ç–æ –ø–æ—Ç–æ–º—É, —á—Ç–æ –∏—Ç–µ—Ä–∏—Ä—É–µ–º—ã–µ –æ–±—ä–µ–∫—Ç—ã —Å–æ–¥–µ—Ä–∂–∞—Ç –ø–æ—Å–ª–µ–¥–æ–≤–∞—Ç–µ–ª—å–Ω–æ—Å—Ç–∏ –∑–Ω–∞—á–µ–Ω–∏–π. –ï—Å–ª–∏ –≤—ã –ø–æ–ø—ã—Ç–∞–µ—Ç–µ—Å—å –∏—Å–ø–æ–ª—å–∑–æ–≤–∞—Ç—å –º–µ—Ç–æ–¥ len () –¥–ª—è –∑–Ω–∞—á–µ–Ω–∏—è None, –≤—ã —Å—Ç–æ–ª–∫–Ω–µ—Ç–µ—Å—å —Å –æ—à–∏–±–∫–æ–π " TypeError: –æ–±—ä–µ–∫—Ç —Ç–∏–ø–∞ " NoneType " –Ω–µ –∏–º–µ–µ—Ç len () & rdquo ;.

–í —ç—Ç–æ–º —Ä—É–∫–æ–≤–æ–¥—Å—Ç–≤–µ –º—ã –ø–æ–≥–æ–≤–æ—Ä–∏–º –æ —Ç–æ–º, —á—Ç–æ –æ–∑–Ω–∞—á–∞–µ—Ç —ç—Ç–∞ –æ—à–∏–±–∫–∞ –∏ –∫–∞–∫ –æ–Ω–∞ —Ä–∞–±–æ—Ç–∞–µ—Ç. –ú—ã —Ä–∞—Å—Å–º–æ—Ç—Ä–∏–º –¥–≤–∞ –ø—Ä–∏–º–µ—Ä–∞ —ç—Ç–æ–π –æ—à–∏–±–∫–∏ –≤ –¥–µ–π—Å—Ç–≤–∏–∏, —á—Ç–æ–±—ã –≤—ã –º–æ–≥–ª–∏ –ø–æ–Ω—è—Ç—å, –∫–∞–∫ –∏—Å–ø—Ä–∞–≤–∏—Ç—å –µ–µ –≤ —Å–≤–æ–µ–º –∫–æ–¥–µ.

TypeError: –æ–±—ä–µ–∫—Ç —Ç–∏–ø–∞ " NoneType " –Ω–µ –∏–º–µ–µ—Ç len ()

NoneType –æ—Ç–Ω–æ—Å–∏—Ç—Å—è –∫ —Ç–∏–ø—É –¥–∞–Ω–Ω—ã—Ö None. –í—ã –Ω–µ –º–æ–∂–µ—Ç–µ –∏—Å–ø–æ–ª—å–∑–æ–≤–∞—Ç—å –º–µ—Ç–æ–¥—ã, –∫–æ—Ç–æ—Ä—ã–µ –±—É–¥—É—Ç —Ä–∞–±–æ—Ç–∞—Ç—å —Å –ø–æ–≤—Ç–æ—Ä—è–µ–º—ã–º–∏ –æ–±—ä–µ–∫—Ç–∞–º–∏, —Ç–∞–∫–∏–º–∏ –∫–∞–∫ len (), –¥–ª—è –∑–Ω–∞—á–µ–Ω–∏—è None. –≠—Ç–æ –ø–æ—Ç–æ–º—É, —á—Ç–æ None –Ω–µ —Å–æ–¥–µ—Ä–∂–∏—Ç –Ω–∞–±–æ—Ä–∞ –∑–Ω–∞—á–µ–Ω–∏–π. –î–ª–∏–Ω–∞ None –Ω–µ –º–æ–∂–µ—Ç –±—ã—Ç—å –≤—ã—á–∏—Å–ª–µ–Ω–∞, –ø–æ—Ç–æ–º—É —á—Ç–æ None –Ω–µ –∏–º–µ–µ—Ç –¥–æ—á–µ—Ä–Ω–∏—Ö –∑–Ω–∞—á–µ–Ω–∏–π.

–≠—Ç–∞ –æ—à–∏–±–∫–∞ —á–∞—Å—Ç–æ –≤—Å—Ç—Ä–µ—á–∞–µ—Ç—Å—è –≤ –¥–≤—É—Ö —Å–ª—É—á–∞—è—Ö:

• –ï—Å–ª–∏ –≤—ã –∑–∞–±—ã–ª–∏, —á—Ç–æ –ø–æ—Å—Ç—Ä–æ–µ–Ω -in —Ñ—É–Ω–∫—Ü–∏–∏ –∏–∑–º–µ–Ω—è—é—Ç —Å–ø–∏—Å–æ–∫ –Ω–∞ –º–µ—Å—Ç–µ
• –ï—Å–ª–∏ –≤—ã –∑–∞–±—ã–≤–∞–µ—Ç–µ –æ–ø–µ—Ä–∞—Ç–æ—Ä return –≤ —Ñ—É–Ω–∫—Ü–∏–∏

–î–∞–≤–∞–π—Ç–µ –ø–æ–¥—Ä–æ–±–Ω–æ —Ä–∞—Å—Å–º–æ—Ç—Ä–∏–º –∫–∞–∂–¥—É—é –∏–∑ —ç—Ç–∏—Ö –ø—Ä–∏—á–∏–Ω.

–ü—Ä–∏—á–∏–Ω–∞ ‚Ññ1: –≤—Å—Ç—Ä–æ–µ–Ω–Ω—ã–µ —Ñ—É–Ω–∫—Ü–∏–∏ –º–µ–Ω—è—é—Ç —Å–ø–∏—Å–∫–∏ –Ω–∞ –º–µ—Å—Ç–µ

–ú—ã —Å–æ–±–∏—Ä–∞–µ–º—Å—è —Å–æ–∑–¥–∞—Ç—å –ø—Ä–æ–≥—Ä–∞–º–º—É, –∫–æ—Ç–æ—Ä–∞—è —Å–æ—Ä—Ç–∏—Ä—É–µ—Ç —Å–ø–∏—Å–æ–∫ —Å–ª–æ–≤–∞—Ä–µ–π, —Å–æ–¥–µ—Ä–∂–∞—â–∏—Ö –∏–Ω—Ñ–æ—Ä–º–∞—Ü–∏—é –æ–± —É—á–∞—â–∏—Ö—Å—è –≤ —à–∫–æ–ª–µ. –ú—ã –æ—Ç—Å–æ—Ä—Ç–∏—Ä—É–µ–º —ç—Ç–æ—Ç —Å–ø–∏—Å–æ–∫ –≤ –ø–æ—Ä—è–¥–∫–µ –≤–æ–∑—Ä–∞—Å—Ç–∞–Ω–∏—è –æ—Ü–µ–Ω–∫–∏ —É—á–∞—â–µ–≥–æ—Å—è –ø–æ –ø–æ—Å–ª–µ–¥–Ω–µ–º—É —Ç–µ—Å—Ç—É.

–î–ª—è –Ω–∞—á–∞–ª–∞ –æ–ø—Ä–µ–¥–µ–ª–∏—Ç–µ —Å–ø–∏—Å–æ–∫ —Å–ª–æ–≤–∞—Ä–µ–π, –∫–æ—Ç–æ—Ä—ã–π —Å–æ–¥–µ—Ä–∂–∏—Ç –∏–Ω—Ñ–æ—Ä–º–∞—Ü–∏—é –æ–± —É—á–∞—â–∏—Ö—Å—è –∏ –∏—Ö –ø–æ—Å–ª–µ–¥–Ω–∏—Ö —Ä–µ–∑—É–ª—å—Ç–∞—Ç–∞—Ö —Ç–µ—Å—Ç–∞:

–ö–∞–∂–¥—ã–π —Å–ª–æ–≤–∞—Ä—å —Å–æ–¥–µ—Ä–∂–∏—Ç –¥–≤–∞ –∫–ª—é—á–∞ –∏ –∑–Ω–∞—á–µ–Ω–∏—è. –û–¥–∏–Ω —Å–æ–æ—Ç–≤–µ—Ç—Å—Ç–≤—É–µ—Ç –∏–º–µ–Ω–∏ —Å—Ç—É–¥–µ–Ω—Ç–∞, –∞ –¥—Ä—É–≥–æ–π - –±–∞–ª–ª—É, –ø–æ–ª—É—á–µ–Ω–Ω–æ–º—É —Å—Ç—É–¥–µ–Ω—Ç–æ–º –Ω–∞ –ø–æ—Å–ª–µ–¥–Ω–µ–º —Ç–µ—Å—Ç–µ. –ó–∞—Ç–µ–º –∏—Å–ø–æ–ª—å–∑—É–π—Ç–µ –º–µ—Ç–æ–¥ sort (), —á—Ç–æ–±—ã –æ—Ç—Å–æ—Ä—Ç–∏—Ä–æ–≤–∞—Ç—å –Ω–∞—à —Å–ø–∏—Å–æ–∫ —Å—Ç—É–¥–µ–Ω—Ç–æ–≤:

81% —É—á–∞—Å—Ç–Ω–∏–∫–æ–≤ –∑–∞—è–≤–∏–ª–∏, —á—Ç–æ –æ–Ω–∏ –ø–æ—á—É–≤—Å—Ç–≤–æ–≤–∞–ª–∏ —Å–µ–±—è –±–æ–ª–µ–µ —É–≤–µ—Ä–µ–Ω–Ω—ã–º–∏ –≤ —Å–≤–æ–∏—Ö –ø–µ—Ä—Å–ø–µ–∫—Ç–∏–≤–∞—Ö —Ç—Ä—É–¥–æ—É—Å—Ç—Ä–æ–π—Å—Ç–≤–∞ –≤ —Å—Ñ–µ—Ä–µ –≤—ã—Å–æ–∫–∏—Ö —Ç–µ—Ö–Ω–æ–ª–æ–≥–∏–π –ø–æ—Å–ª–µ –ø–æ—Å–µ—â–µ–Ω–∏—è —É—á–µ–±–Ω–æ–≥–æ –ª–∞–≥–µ—Ä—è. –ü–æ–ª—É—á–∏—Ç–µ –ø—Ä–∏–≥–ª–∞—à–µ–Ω–∏–µ –Ω–∞ —É—á–µ–±–Ω—ã–π –∫—É—Ä—Å —Å–µ–≥–æ–¥–Ω—è.

–°—Ä–µ–¥–Ω–∏–π –≤—ã–ø—É—Å–∫–Ω–∏–∫ —É—á–µ–±–Ω–æ–≥–æ –ª–∞–≥–µ—Ä—è –ø–æ—Ç—Ä–∞—Ç–∏–ª –º–µ–Ω–µ–µ —à–µ—Å—Ç–∏ –º–µ—Å—è—Ü–µ–≤ –Ω–∞ –ø–µ—Ä–µ—Ö–æ–¥–Ω—É—é –∫–∞—Ä—å–µ—Ä—É, –æ—Ç –Ω–∞—á–∞–ª–∞ —É—á–µ–±–Ω–æ–≥–æ –ª–∞–≥–µ—Ä—è –¥–æ –ø–æ–∏—Å–∫–∞ —Å–≤–æ–µ–π –ø–µ—Ä–≤–æ–π —Ä–∞–±–æ—Ç—ã.

–ú—ã –æ–±—ä—è–≤–∏–ª–∏ —Ñ—É–Ω–∫—Ü–∏—é, –Ω–∞–∑—ã–≤–∞–µ–º—É—é " score_sort " –∫–æ—Ç–æ—Ä—ã–π –≤–æ–∑–≤—Ä–∞—â–∞–µ—Ç –∑–Ω–∞—á–µ–Ω–∏–µ " score " –≤ –∫–∞–∂–¥–æ–º —Å–ª–æ–≤–∞—Ä–µ. –ó–∞—Ç–µ–º –º—ã –∏—Å–ø–æ–ª—å–∑—É–µ–º —ç—Ç–æ, —á—Ç–æ–±—ã —É–ø–æ—Ä—è–¥–æ—á–∏—Ç—å —ç–ª–µ–º–µ–Ω—Ç—ã –≤ –Ω–∞—à–µ–º —Å–ø–∏—Å–∫–µ —Å–ª–æ–≤–∞—Ä–µ–π —Å –ø–æ–º–æ—â—å—é –º–µ—Ç–æ–¥–∞ sort ().