Python Flatten List: практическое руководство

–°–≥–ª–∞–∂–∏–≤–∞–Ω–∏–µ —Å–ø–∏—Å–∫–∞ - —ç—Ç–æ –ø—Ä–æ—Ü–µ—Å—Å —É–¥–∞–ª–µ–Ω–∏—è –∏–∑–º–µ—Ä–µ–Ω–∏—è –∏–∑ —Å–ø–∏—Å–∫–∞. –†–∞–∑–º–µ—Ä - —ç—Ç–æ –¥–æ–ø–æ–ª–Ω–∏—Ç–µ–ª—å–Ω–∞—è –∫–æ–æ—Ä–¥–∏–Ω–∞—Ç–∞, –Ω–µ–æ–±—Ö–æ–¥–∏–º–∞—è –¥–ª—è –Ω–∞—Ö–æ–∂–¥–µ–Ω–∏—è —ç–ª–µ–º–µ–Ω—Ç–∞ –≤ —Å–ø–∏—Å–∫–µ. –í—ã –º–æ–∂–µ—Ç–µ —Å–≥–ª–∞–¥–∏—Ç—å —Å–ø–∏—Å–æ–∫ Python, –∏—Å–ø–æ–ª—å–∑—É—è –ø–æ–Ω–∏–º–∞–Ω–∏–µ —Å–ø–∏—Å–∫–∞, –≤–ª–æ–∂–µ–Ω–Ω—ã–π —Ü–∏–∫–ª for –∏–ª–∏ –º–µ—Ç–æ–¥ itertools.chain ().

–°–ø–∏—Å–æ–∫ Python –º–æ–∂–µ—Ç —Å–æ–¥–µ—Ä–∂–∞—Ç—å –Ω–µ—Å–∫–æ–ª—å–∫–æ –∏–∑–º–µ—Ä–µ–Ω–∏–π. –≠—Ç–æ –æ–∑–Ω–∞—á–∞–µ—Ç, —á—Ç–æ —É –≤–∞—Å –µ—Å—Ç—å —Å–ø–∏—Å–æ–∫ –≤–Ω—É—Ç—Ä–∏ —Å–ø–∏—Å–∫–æ–≤. –≠—Ç–∏ —Å–ø–∏—Å–∫–∏, –∏–Ω–æ–≥–¥–∞ –Ω–∞–∑—ã–≤–∞–µ–º—ã–µ " –≤–ª–æ–∂–µ–Ω–Ω—ã–º–∏ —Å–ø–∏—Å–∫–∞–º–∏ " –º–æ–∂–Ω–æ –ø—Ä–µ–æ–±—Ä–∞–∑–æ–≤–∞—Ç—å –æ–±—Ä–∞—Ç–Ω–æ –≤ –æ–±—ã—á–Ω—ã–π —Å–ø–∏—Å–æ–∫.

–≠—Ç–æ –æ–∑–Ω–∞—á–∞–µ—Ç, —á—Ç–æ –≤—ã –º–æ–∂–µ—Ç–µ –ø–µ—Ä–µ–º–µ—Å—Ç–∏—Ç—å –≤—Å–µ –∑–Ω–∞—á–µ–Ω–∏—è –∏–∑ —Å–ø–∏—Å–∫–æ–≤ –≤ —Å–ø–∏—Å–∫–µ –≤ –æ–¥–∏–Ω —Å–ø–∏—Å–æ–∫. –ü—Ä–µ–≤—Ä–∞—â–µ–Ω–∏–µ —Å–ø–∏—Å–∫–∞ —Å–ø–∏—Å–∫–æ–≤ –≤ —Å–ø–∏—Å–æ–∫ –Ω–∞–∑—ã–≤–∞–µ—Ç—Å—è " —Å–≥–ª–∞–∂–∏–≤–∞–Ω–∏–µ–º —Å–ø–∏—Å–∫–∞ "

Python Flatten List

–ï—Å—Ç—å —Ç—Ä–∏ —Å–ø–æ—Å–æ–±–∞ —Å–≥–ª–∞–¥–∏—Ç—å —Å–ø–∏—Å–æ–∫ Python:

• –ò—Å–ø–æ–ª—å–∑–æ–≤–∞–Ω–∏–µ –ø–æ–Ω–∏–º–∞–Ω–∏—è —Å–ø–∏—Å–∫–∞.
• –ò—Å–ø–æ–ª—å–∑–æ–≤–∞–Ω–∏–µ –≤–ª–æ–∂–µ–Ω–Ω–æ–≥–æ —Ü–∏–∫–ª–∞ for.
• –ò—Å–ø–æ–ª—å–∑–æ–≤–∞–Ω–∏–µ –º–µ—Ç–æ–¥–∞ itertools.chain ().

–í —ç—Ç–æ–º —Ä—É–∫–æ–≤–æ–¥—Å—Ç–≤–µ –º—ã –≥–æ–≤–æ—Ä–∏–º –æ —Ç–æ–º, –∫–∞–∫ —Å–≥–ª–∞–¥–∏—Ç—å —Å–ø–∏—Å–æ–∫, –∏—Å–ø–æ–ª—å–∑—É—è –ø–æ–Ω–∏–º–∞–Ω–∏–µ —Å–ø–∏—Å–∫–∞, —Ü–∏–∫–ª for –∏ –º–µ—Ç–æ–¥ itertools.chain (). –ú—ã —Ä–∞—Å—Å–º–æ—Ç—Ä–∏–º –¥–≤–∞ –ø—Ä–∏–º–µ—Ä–∞, —á—Ç–æ–±—ã –≤—ã –º–æ–≥–ª–∏ –Ω–∞—á–∞—Ç—å —Å–≥–ª–∞–∂–∏–≤–∞–Ω–∏–µ —Å–ø–∏—Å–∫–æ–≤ –≤ —Å–≤–æ–∏—Ö —Å–æ–±—Å—Ç–≤–µ–Ω–Ω—ã—Ö –ø—Ä–æ–≥—Ä–∞–º–º–∞—Ö.

Python: —Å–≥–ª–∞–∂–∏–≤–∞–Ω–∏–µ —Å–ø–∏—Å–∫–æ–≤ —Å –∏—Å–ø–æ–ª—å–∑–æ–≤–∞–Ω–∏–µ–º –ø–æ–Ω–∏–º–∞–Ω–∏—è —Å–ø–∏—Å–∫–∞

A Python list computing –æ–ø—Ä–µ–¥–µ–ª—è–µ—Ç —Å–ø–∏—Å–æ–∫ –Ω–∞ –æ—Å–Ω–æ–≤–µ —Å–æ–¥–µ—Ä–∂–∏–º–æ–≥–æ —Å—É—â–µ—Å—Ç–≤—É—é—â–µ–≥–æ —Å–ø–∏—Å–∫–∞. –í—ã –º–æ–∂–µ—Ç–µ –Ω–∞—Å—Ç—Ä–æ–∏—Ç—å –∫–∞–∂–¥—ã–π —ç–ª–µ–º–µ–Ω—Ç, –∫–æ—Ç–æ—Ä—ã–π –≤—Ö–æ–¥–∏—Ç –≤ –≤–∞—à –Ω–æ–≤—ã–π —Å–ø–∏—Å–æ–∫, —É–∫–∞–∑–∞–≤ —É—Å–ª–æ–≤–∏—è –∏–ª–∏ –∏–∑–º–µ–Ω–µ–Ω–∏—è –≤ –ø–æ–Ω–∏–º–∞–Ω–∏–∏.

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

–í–æ—Ç —Å–∏–Ω—Ç–∞–∫—Å–∏—Å –¥–ª—è –ø–æ–Ω–∏–º–∞–Ω–∏—è —Å–ø–∏—Å–∫–∞:

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

–≠—Ç–æ –ø–æ–Ω–∏–º–∞–Ω–∏–µ —É–º–Ω–æ–∂–∞–µ—Ç –∫–∞–∂–¥–æ–µ —á–∏—Å–ª–æ –≤ –Ω–∞—à–∏ " —á–∏—Å–ª–∞ " list by 2.

–°–≥–ª–∞–∂–µ–Ω–Ω—ã–π —Å–ø–∏—Å–æ–∫: –ø—Ä–∏–º–µ—Ä –ø–æ–Ω–∏–º–∞–Ω–∏—è —Å–ø–∏—Å–∫–∞

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

–ü–µ—Ä–≤—ã–π —Å–ø–∏—Å–æ–∫ —Å–æ–¥–µ—Ä–∂–∏—Ç –≤–µ–≥–∞–Ω—Å–∫–∏–µ –Ω–∞—á–∏–Ω–∫–∏ –¥–ª—è —Å—ç–Ω–¥–≤–∏—á–µ–π; –≤–æ –≤—Ç–æ—Ä–æ–º —Å–ø–∏—Å–∫–µ - –≤–µ–≥–µ—Ç–∞—Ä–∏–∞–Ω—Å–∫–∏–µ –Ω–∞—á–∏–Ω–∫–∏ –¥–ª—è —Å—ç–Ω–¥–≤–∏—á–µ–π; —Ç—Ä–µ—Ç–∏–π —Å–ø–∏—Å–æ–∫ —Å–æ–¥–µ—Ä–∂–∏—Ç –≤—Å–µ –Ω–∞—á–∏–Ω–∫–∏ –¥–ª—è —Å—ç–Ω–¥–≤–∏—á–µ–π, —Å–æ–¥–µ—Ä–∂–∞—â–∏–µ –º—è—Å–æ.