Python Dictionary Get: пошаговое руководство
Функции и методы Python
Michael Zippo
27.11.2021
–ú–µ—Ç–æ–¥ get () —Å–ª–æ–≤–∞—Ä—è Python –≤–æ–∑–≤—Ä–∞—â–∞–µ—Ç –∑–Ω–∞—á–µ–Ω–∏–µ, —Å–≤—è–∑–∞–Ω–Ω–æ–µ —Å –æ–ø—Ä–µ–¥–µ–ª–µ–Ω–Ω—ã–º –∫–ª—é—á–æ–º. get () –ø—Ä–∏–Ω–∏–º–∞–µ—Ç –¥–≤–∞ –∞—Ä–≥—É–º–µ–Ω—Ç–∞: –∫–ª—é—á, –∫–æ—Ç–æ—Ä—ã–π –≤—ã —Ö–æ—Ç–∏—Ç–µ –Ω–∞–π—Ç–∏, –∏ –∑–Ω–∞—á–µ–Ω–∏–µ –ø–æ —É–º–æ–ª—á–∞–Ω–∏—é, –∫–æ—Ç–æ—Ä–æ–µ –≤–æ–∑–≤—Ä–∞—â–∞–µ—Ç—Å—è, –µ—Å–ª–∏ –∫–ª—é—á –Ω–µ –Ω–∞–π–¥–µ–Ω.
–ü–æ–ª—É—á–µ–Ω–∏–µ –∑–Ω–∞—á–µ–Ω–∏—è –¥–ª—è —É–∫–∞–∑–∞–Ω–Ω–æ–≥–æ –∫–ª—é—á–∞ –≤ —Å–ª–æ–≤–∞—Ä–µ. - –æ–±—ã—á–Ω–∞—è –æ–ø–µ—Ä–∞—Ü–∏—è –ø—Ä–∏ —Ä–∞–±–æ—Ç–µ —Å–æ —Å–ª–æ–≤–∞—Ä—è–º–∏. –ù–∞–ø—Ä–∏–º–µ—Ä, –≤—ã –º–æ–∂–µ—Ç–µ –±—ã—Ç—å –≤–ª–∞–¥–µ–ª—å—Ü–µ–º —á–∞–π–Ω–æ–≥–æ –º–∞–≥–∞–∑–∏–Ω–∞ –∏ —Ö–æ—Ç–∏—Ç–µ —É–∑–Ω–∞—Ç—å, —Å–∫–æ–ª—å–∫–æ —É –≤–∞—Å –±—ã–ª–æ –∑–∞–∫–∞–∑–æ–≤ –Ω–∞ –±–µ–ª—ã–π —á–∞–π.
–í–æ—Ç –æ—Ç–∫—É–¥–∞ —Å–ª–æ–≤–∞—Ä—å Python –ø–æ–ª—É—á–∞–µ—Ç & mdash; dict.get () –ü—Ä–∏—Ö–æ–¥–∏—Ç –º–µ—Ç–æ–¥ & mdash;: –æ–Ω –≤–æ–∑–≤—Ä–∞—â–∞–µ—Ç –∑–Ω–∞—á–µ–Ω–∏–µ –¥–ª—è —É–∫–∞–∑–∞–Ω–Ω–æ–≥–æ –∫–ª—é—á–∞ –≤ —Å–ª–æ–≤–∞—Ä–µ. & nbsp;
–≠—Ç–æ—Ç –º–µ—Ç–æ–¥ –±—É–¥–µ—Ç –≤–æ–∑–≤—Ä–∞—â–∞—Ç—å –∑–Ω–∞—á–µ–Ω–∏–µ —Ç–æ–ª—å–∫–æ –≤ —Ç–æ–º —Å–ª—É—á–∞–µ, –µ—Å–ª–∏ —É–∫–∞–∑–∞–Ω–Ω—ã–π –∫–ª—é—á –ø—Ä–∏—Å—É—Ç—Å—Ç–≤—É–µ—Ç –≤ —Å–ª–æ–≤–∞—Ä–µ, –≤ –ø—Ä–æ—Ç–∏–≤–Ω–æ–º —Å–ª—É—á–∞–µ –æ–Ω –≤–µ—Ä–Ω–µ—Ç –ù–µ—Ç.
–í —ç—Ç–æ–º —Ä—É–∫–æ–≤–æ–¥—Å—Ç–≤–µ –º—ã —Ä–∞—Å—Å–º–æ—Ç—Ä–∏–º –≤—Å—Ç—Ä–æ–µ–Ω–Ω—ã–π –≤ Python –º–µ—Ç–æ–¥ dict.get () –∏ —Ç–æ, –∫–∞–∫ –≤—ã –º–æ–∂–µ—Ç–µ –∏—Å–ø–æ–ª—å–∑–æ–≤–∞—Ç—å –µ–≥–æ –¥–ª—è –ø–æ–ª—É—á–µ–Ω–∏—è –æ–ø—Ä–µ–¥–µ–ª–µ–Ω–Ω—ã—Ö –∑–Ω–∞—á–µ–Ω–∏—è –∏–∑ —Å–ª–æ–≤–∞—Ä–µ–π Python. –ö—Ä–æ–º–µ —Ç–æ–≥–æ, –º—ã —Ä–∞—Å—Å–º–æ—Ç—Ä–∏–º –ø—Ä–∏–º–µ—Ä—ã –º–µ—Ç–æ–¥–∞ dict.get () –≤ —Ä–µ–∞–ª—å–Ω—ã—Ö –ø—Ä–æ–≥—Ä–∞–º–º–∞—Ö, —á—Ç–æ–±—ã –±–æ–ª–µ–µ –ø–æ–¥—Ä–æ–±–Ω–æ –æ–±—ä—è—Å–Ω–∏—Ç—å, –∫–∞–∫ –æ–Ω —Ä–∞–±–æ—Ç–∞–µ—Ç.
–û–±–Ω–æ–≤–ª–µ–Ω–∏–µ —Å–ª–æ–≤–∞—Ä—è Python
—Å–ª–æ–≤–∞—Ä–∏ Python —Å–æ–ø–æ—Å—Ç–∞–≤–ª—è—é—Ç –∫–ª—é—á–∏ —Å–æ –∑–Ω–∞—á–µ–Ω–∏—è–º–∏ –∏ —Å–æ–∑–¥–∞—é—Ç –ø–∞—Ä—ã –∫–ª—é—á-–∑–Ω–∞—á–µ–Ω–∏–µ, –∫–æ—Ç–æ—Ä—ã–µ –º–æ–∂–Ω–æ –∏—Å–ø–æ–ª—å–∑–æ–≤–∞—Ç—å –¥–ª—è —Ö—Ä–∞–Ω–∏—Ç—å –¥–∞–Ω–Ω—ã–µ. –°–ª–æ–≤–∞—Ä–∏ —á–∞—Å—Ç–æ –∏—Å–ø–æ–ª—å–∑—É—é—Ç—Å—è –¥–ª—è —Ö—Ä–∞–Ω–µ–Ω–∏—è —Å–≤—è–∑–∞–Ω–Ω—ã—Ö –¥–∞–Ω–Ω—ã—Ö. –ù–∞–ø—Ä–∏–º–µ—Ä, —Å–ª–æ–≤–∞—Ä—å –º–æ–∂–µ—Ç –≤—ã—Å—Ç—É–ø–∞—Ç—å –≤ –∫–∞—á–µ—Å—Ç–≤–µ –∑–∞–ø–∏—Å–∏ –æ–± —É—á–µ–Ω–∏–∫–µ –≤ —à–∫–æ–ª–µ –∏–ª–∏ –∏–Ω—Ñ–æ—Ä–º–∞—Ü–∏–∏ –æ –∫–Ω–∏–≥–µ –≤ –±–∏–±–ª–∏–æ—Ç–µ–∫–µ. & Nbsp; –Ø —Ö–æ—á—É –¥–∞—Ç—å –∞–≤—Ç–æ—Ä–∞–º –ø—Ä—è–º—É—é –æ–±—Ä–∞—Ç–Ω—É—é —Å–≤—è–∑—å, —á—Ç–æ–±—ã –æ–Ω–∏ –º–æ–≥–ª–∏ —É–ª—É—á—à–∏—Ç—å, –∞ –Ω–µ –ø—Ä–æ—Å—Ç–æ –∏—Å–ø—Ä–∞–≤–ª—è—Ç—å –æ—à–∏–±–∫–∏.
–í–æ—Ç –ø—Ä–∏–º–µ—Ä —Å–ª–æ–≤–∞—Ä—è –Ω–∞ Python, –∫–æ—Ç–æ—Ä—ã–π —Å–æ–¥–µ—Ä–∂–∏—Ç –∏–Ω—Ñ–æ—Ä–º–∞—Ü–∏—é –æ –∫–æ–Ω–∫—Ä–µ—Ç–Ω–æ–º —á–∞–µ, –ø—Ä–æ–¥–∞–≤–∞–µ–º–æ–º –≤ —á–∞–π–Ω–æ–º –º–∞–≥–∞–∑–∏–Ω–µ:
–°–ª–æ–≤–∞ –∫ —Å–ª–µ–≤–∞ –æ—Ç –¥–≤–æ–µ—Ç–æ—á–∏—è –Ω–∞—Ö–æ–¥—è—Ç—Å—è –∫–ª—é—á–∏ —Å–ª–æ–≤–∞—Ä—è, –∫–æ—Ç–æ—Ä—ã–º–∏ –≤ –ø—Ä–∏–≤–µ–¥–µ–Ω–Ω–æ–º –≤—ã—à–µ –ø—Ä–∏–º–µ—Ä–µ —è–≤–ª—è—é—Ç—Å—è: supplier, name, box_in_stock –∏ —Å–≤–æ–±–æ–¥–Ω–æ_leaf .
81% —É—á–∞—Å—Ç–Ω–∏–∫–æ–≤ –∑–∞—è–≤–∏–ª–∏, —á—Ç–æ –ø–æ—Å–ª–µ –±—É—Ç–∫–µ–º–ø–∞ –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. –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–∞ –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.
–°–ª–æ–≤–∞—Ä—å Python get () –ú–µ—Ç–æ–¥ –∏–∑–≤–ª–µ–∫–∞–µ—Ç –∑–Ω–∞—á–µ–Ω–∏–µ, —Å–æ–ø–æ—Å—Ç–∞–≤–ª–µ–Ω–Ω–æ–µ –æ–ø—Ä–µ–¥–µ–ª–µ–Ω–Ω–æ–º—É –∫–ª—é—á—É. get () –≤–µ—Ä–Ω–µ—Ç None, –µ—Å–ª–∏ –∫–ª—é—á –Ω–µ –Ω–∞–π–¥–µ–Ω, –∏–ª–∏ –∑–Ω–∞—á–µ–Ω–∏–µ –ø–æ —É–º–æ–ª—á–∞–Ω–∏—é, –µ—Å–ª–∏ –æ–Ω —É–∫–∞–∑–∞–Ω.
–°–∏–Ω—Ç–∞–∫—Å–∏—Å –º–µ—Ç–æ–¥–∞ dict.get () –≤ Python —Å–ª–µ–¥—É—é—â–∏–π:
–ú–µ—Ç–æ–¥ dict.get () –ø—Ä–∏–Ω–∏–º–∞–µ—Ç –¥–≤–∞ –ø–∞—Ä–∞–º–µ—Ç—Ä–∞ :
- name - —ç—Ç–æ –∏–º—è –∫–ª—é—á–∞, –∑–Ω–∞—á–µ–Ω–∏–µ –∫–æ—Ç–æ—Ä–æ–≥–æ –≤—ã —Ö–æ—Ç–∏—Ç–µ –≤–µ—Ä–Ω—É—Ç—å. –≠—Ç–æ—Ç –ø–∞—Ä–∞–º–µ—Ç—Ä —è–≤–ª—è–µ—Ç—Å—è –æ–±—è–∑–∞—Ç–µ–ª—å–Ω—ã–º.
- –∑–Ω–∞—á–µ–Ω–∏–µ - —ç—Ç–æ –∑–Ω–∞—á–µ–Ω–∏–µ, –∫–æ—Ç–æ—Ä–æ–µ –Ω—É–∂–Ω–æ –≤–µ—Ä–Ω—É—Ç—å, –µ—Å–ª–∏ —É–∫–∞–∑–∞–Ω–Ω—ã–π –∫–ª—é—á –Ω–µ —Å—É—â–µ—Å—Ç–≤—É–µ—Ç. –ü–æ —É–º–æ–ª—á–∞–Ω–∏—é —ç—Ç–æ –ù–µ—Ç. –≠—Ç–æ—Ç –ø–∞—Ä–∞–º–µ—Ç—Ä —è–≤–ª—è–µ—Ç—Å—è –Ω–µ–æ–±—è–∑–∞—Ç–µ–ª—å–Ω—ã–º.
–í—ã –º–æ–∂–µ—Ç–µ –∏–∑–≤–ª–µ–∫–∞—Ç—å —ç–ª–µ–º–µ–Ω—Ç—ã –∏–∑ —Å–ª–æ–≤–∞—Ä—è, –∏—Å–ø–æ–ª—å–∑—É—è —Å–∏–Ω—Ç–∞–∫—Å–∏—Å –∏–Ω–¥–µ–∫—Å–∞—Ü–∏–∏. –ö–∞–∫ –º—ã –æ–±—Å—É–¥–∏–º –ø–æ–∑–∂–µ –≤ —ç—Ç–æ–º —Ä—É–∫–æ–≤–æ–¥—Å—Ç–≤–µ, —ç—Ç–æ –∏–Ω–æ–≥–¥–∞ –º–æ–∂–µ—Ç –±—ã—Ç—å –Ω–µ–ª–æ–≥–∏—á–Ω—ã–º.
–ë–æ–ª—å—à–∏–Ω—Å—Ç–≤–æ –Ω–æ–≤–∏—á–∫–æ–≤ —Å–Ω–∞—á–∞–ª–∞ –∏–∑—É—á–∞—é—Ç –∏–Ω–¥–µ–∫—Å–∏—Ä–æ–≤–∞–Ω–∏–µ. –ù–æ –æ–¥–Ω–∞–∂–¥—ã –≤—ã –∑–Ω–∞–µ—Ç–µ, –∫–∞–∫ –∏—Å–ø–æ–ª—å–∑–æ–≤–∞—Ç—å get (), –≤—ã, –≤–µ—Ä–æ—è—Ç–Ω–æ, –±—É–¥–µ—Ç–µ –∏—Å–ø–æ–ª—å–∑–æ–≤–∞—Ç—å –µ–≥–æ —á–∞—â–µ, —á–µ–º —Å–ª–æ–≤–∞—Ä—å i ndexing –¥–ª—è –ø–æ–ª—É—á–µ–Ω–∏—è –∑–Ω–∞—á–µ–Ω–∏—è.
–ü–æ–ª—É—á–∏—Ç—å –∑–Ω–∞—á–µ–Ω–∏—è –∏–∑ —Å–ª–æ–≤–∞—Ä—è –≤ Python: –ø—Ä–∏–º–µ—Ä
–î–∞–≤–∞–π—Ç–µ —Ä–∞—Å—Å–º–æ—Ç—Ä–∏–º –ø—Ä–∏–º–µ—Ä, —á—Ç–æ–±—ã –ø—Ä–æ–¥–µ–º–æ–Ω—Å—Ç—Ä–∏—Ä–æ–≤–∞—Ç—å dict.get () –º–µ—Ç–æ–¥ –≤ –¥–µ–π—Å—Ç–≤–∏–∏. –ü—Ä–µ–¥–ø–æ–ª–æ–∂–∏–º, —É –Ω–∞—Å –µ—Å—Ç—å —á–∞–π–Ω—ã–π –¥–æ–º–∏–∫, –∏ –º—ã —Ö–æ—Ç–∏–º —É–∑–Ω–∞—Ç—å, —Å–∫–æ–ª—å–∫–æ –ª—é–¥–µ–π –∑–∞–∫–∞–∑–∞–ª–∏ matcha_green_tea –≤ –ø—Ä–æ—à–ª–æ–º –º–µ—Å—è—Ü–µ.
–≠—Ç–∏ –¥–∞–Ω–Ω—ã–µ —è–≤–ª—è—é—Ç—Å—è —á–∞—Å—Ç—å—é —Å–ª–æ–≤–∞—Ä—è, –≤ –∫–æ—Ç–æ—Ä–æ–º —Ö—Ä–∞–Ω—è—Ç—Å—è –Ω–∞–∑–≤–∞–Ω–∏—è —á–∞–µ–≤ –≤ –≤–∏–¥–µ –∫–ª—é—á–∏. –ö–æ–ª–∏—á–µ—Å—Ç–≤–æ –ª—é–¥–µ–π, –∑–∞–∫–∞–∑–∞–≤—à–∏—Ö –æ–ø—Ä–µ–¥–µ–ª–µ–Ω–Ω—ã–π —á–∞–π, —Å–æ—Ö—Ä–∞–Ω—è–µ—Ç—Å—è –∫–∞–∫ –∑–Ω–∞—á–µ–Ω–∏—è .
–ú—ã –º–æ–≥–ª–∏ –±—ã –∏—Å–ø–æ–ª—å–∑–æ–≤–∞—Ç—å —Å–ª–µ–¥—É—é—â–∏–π –∫–æ–¥, —á—Ç–æ–±—ã —É–∑–Ω–∞—Ç—å, —Å–∫–æ–ª—å–∫–æ –ª—é–¥–µ–π –∑–∞–∫–∞–∑–∞–ª–∏ matcha_green_tea:
–ù–∞—à –∫–æ–¥ –≤–æ–∑–≤—Ä–∞—â–∞–µ—Ç: 26.
–í –Ω–∞—á–∞–ª–µ –Ω–∞—à–µ–≥–æ –∫–æ–¥–∞ –º—ã –æ–ø—Ä–µ–¥–µ–ª—è–µ–º –ø–µ—Ä–µ–º–µ–Ω–Ω—É—é Python —Å –∏–º–µ–Ω–µ–º teas . –í —ç—Ç–æ–º —Å–ª–æ–≤–∞—Ä–µ —Ö—Ä–∞–Ω–∏—Ç—Å—è –∏–Ω—Ñ–æ—Ä–º–∞—Ü–∏—è –æ –∑–∞–∫–∞–∑–∞—Ö —á–∞—è –≤ –Ω–∞—à–µ–º —á–∞–π–Ω–æ–º –¥–æ–º–∏–∫–µ.
–ó–∞—Ç–µ–º –º—ã –∏—Å–ø–æ–ª—å–∑—É–µ–º –º–µ—Ç–æ–¥ dict.get () –≤ –Ω–∞—à–µ–º —Å–ª–æ–≤–∞—Ä–µ teas –¥–ª—è –ø–æ–ª—É—á–µ–Ω–∏—è –∑–Ω–∞—á–µ–Ω–∏–µ, —Å–≤—è–∑–∞–Ω–Ω–æ–µ —Å –∫–ª—é—á–æ–º matcha_green_tea. –ù–∞–∫–æ–Ω–µ—Ü, –º—ã –≤—ã–≤–æ–¥–∏–º –∑–Ω–∞—á–µ–Ω–∏–µ –Ω–∞ –∫–æ–Ω—Å–æ–ª—å —Å –ø–æ–º–æ—â—å—é –∏–Ω—Å—Ç—Ä—É–∫—Ü–∏–∏ Python print () .
–ü—É—Å—Ç—å " s —Ä–∞—Å—Å–º–æ—Ç—Ä–∏–º –¥—Ä—É–≥–æ–π –ø—Ä–∏–º–µ—Ä. –°–∫–∞–∂–µ–º, —É –Ω–∞—Å –µ—Å—Ç—å —Å–ª–æ–≤–∞—Ä—å –¥–ª—è –∫–∞–∂–¥–æ–≥–æ —á–∞—è, –∫–æ—Ç–æ—Ä—ã–π –º—ã –ø—Ä–æ–¥–∞–µ–º. –≠—Ç–∏ —Å–ª–æ–≤–∞—Ä–∏ —Å–æ–¥–µ—Ä–∂–∞—Ç –∏–Ω—Ñ–æ—Ä–º–∞—Ü–∏—é –æ —Å–æ–æ—Ç–≤–µ—Ç—Å—Ç–≤—É—é—â–∏—Ö —á–∞—è—Ö, –≤ —Ç–æ–º —á–∏—Å–ª–µ:
- –ö—Ç–æ –ø–æ—Å—Ç–∞–≤—â–∏–∫.
- –ö–∞–∫ –º—ã –Ω–∞–∑—ã–≤–∞–µ–º —á–∞–π.
- –°–∫–æ–ª—å–∫–æ –∫–æ—Ä–æ–±–æ–∫ –º—ã –µ—Å—Ç—å –≤ –Ω–∞–ª–∏—á–∏–∏.
- –ë—É–¥—å —Ç–æ –≤–∫–ª–∞–¥—ã—à–∏.
–í–æ—Ç –Ω–∞—à —Å–ª–æ–≤–∞—Ä—å —á–µ—Ä–Ω–æ–≥–æ —á–∞—è, –∫–æ—Ç–æ—Ä—ã–π –º—ã –ø—Ä–æ–¥–∞–µ–º:
–ü—Ä–µ–¥–ø–æ–ª–æ–∂–∏–º, –º—ã —Ö–æ—Ç–∏–º —É–∑–Ω–∞—Ç—å —Ö—Ä–∞–Ω–∏—Ç—Å—è –ª–∏ –Ω–∞—à —á–µ—Ä–Ω—ã–π —á–∞–π –≤ –≤–∏–¥–µ –ª–∏—Å—Ç–æ–≤–æ–≥–æ —á–∞—è. –≠—Ç–æ –º–æ–∂–Ω–æ —Å–¥–µ–ª–∞—Ç—å —Å –ø–æ–º–æ—â—å—é —Å–ª–µ–¥—É—é—â–µ–≥–æ –∫–æ–¥–∞:
–ù–∞—à –∫–æ–¥ –≤–æ–∑–≤—Ä–∞—â–∞–µ—Ç –ª–æ–≥–∏—á–µ—Å–∫–æ–µ –∑–Ω–∞—á–µ–Ω–∏–µ Python : True.
–ú—ã –∏—Å–ø–æ–ª—å–∑—É–µ–º –º–µ—Ç–æ–¥ dict.get () –¥–ª—è –ø–æ–ª—É—á–µ–Ω–∏—è –∑–Ω–∞—á–µ–Ω–∏—è —Å–≤–æ–±–æ–¥–Ω–æ_leaf –≤ black_tea < / em> —Å–ª–æ–≤–∞—Ä—å. –¢–æ—Ç —Ñ–∞–∫—Ç, —á—Ç–æ –Ω–∞—à –∫–æ–¥ –≤–æ–∑–≤—Ä–∞—â–∞–µ—Ç True, –≥–æ–≤–æ—Ä–∏—Ç –Ω–∞–º, —á—Ç–æ –Ω–∞—à —á–µ—Ä–Ω—ã–π —á–∞–π —Ö—Ä–∞–Ω–∏—Ç—Å—è –∫–∞–∫ –ª–∏—Å—Ç–æ–≤–æ–π —á–∞–π. –ú—ã –±—ã –ø–æ–ª—É—á–∏–ª–∏ –≤–≤–µ–¥–∏—Ç–µ –∑–Ω–∞—á–µ–Ω–∏–µ None, –µ—Å–ª–∏ –Ω–∞—à —á–∞–π –Ω–µ —Å—É—â–µ—Å—Ç–≤—É–µ—Ç –≤ —Å–ª–æ–≤–∞—Ä–µ.
Python Dictionary get (): –∑–Ω–∞—á–µ–Ω–∏–µ –ø–æ —É–º–æ–ª—á–∞–Ω–∏—é
–ú–µ—Ç–æ–¥ dict.get () –ø—Ä–∏–Ω–∏–º–∞–µ—Ç –Ω–µ–æ–±—è–∑–∞—Ç–µ–ª—å–Ω—ã–π –≤—Ç–æ—Ä–æ–π –ø–∞—Ä–∞–º–µ—Ç—Ä. –≠—Ç–æ—Ç –ø–∞—Ä–∞–º–µ—Ç—Ä —É–∫–∞–∑—ã–≤–∞–µ—Ç –∑–Ω–∞—á–µ–Ω–∏–µ, –∫–æ—Ç–æ—Ä–æ–µ –¥–æ–ª–∂–Ω–æ –±—ã—Ç—å –≤–æ–∑–≤—Ä–∞—â–µ–Ω–æ, –µ—Å–ª–∏ –∫–ª—é—á –Ω–µ –º–æ–∂–µ—Ç –±—ã—Ç—å –Ω–∞–π–¥–µ–Ω –≤ —Å–ª–æ–≤–∞—Ä–µ. –≠—Ç–æ –ø–æ–∑–≤–æ–ª—è–µ—Ç –≤–∞–º –∏–∑–º–µ–Ω–∏—Ç—å –æ—Ç–≤–µ—Ç –ø–æ —É–º–æ–ª—á–∞–Ω–∏—é None, –µ—Å–ª–∏ –∑–Ω–∞—á–µ–Ω–∏–µ –Ω–µ –Ω–∞–π–¥–µ–Ω–æ.
–ò—Ç–∞–∫, –¥–æ–ø—É—Å—Ç–∏–º, –º—ã —Ö–æ—Ç–∏–º –ø–æ–ª—É—á–∏—Ç—å –≤–∫—É—Å–æ–≤—ã–µ_–ø–æ–º–µ—Ç–∫–∏ –∏–∑ —Å–ª–æ–≤–∞—Ä—è, –≤ –∫–æ—Ç–æ—Ä–æ–º —Ö—Ä–∞–Ω–∏—Ç—Å—è –∏–Ω—Ñ–æ—Ä–º–∞—Ü–∏—è –æ —á–µ—Ä–Ω—ã–π —á–∞–π –∑–∞–ø–∞—Å—ã –Ω–∞—à–µ–π —á–∞–π—Ö–∞–Ω—ã. –ú—ã —Ç–æ–ª—å–∫–æ —á—Ç–æ –Ω–∞–Ω—è–ª–∏ –¥–µ–≥—É—Å—Ç–∞—Ç–æ—Ä–∞ —á–∞—è, –∫–æ—Ç–æ—Ä–æ–º—É –±—ã–ª–æ –ø–æ—Ä—É—á–µ–Ω–æ –Ω–∞–ø–∏—Å–∞—Ç—å —ç—Ç–∏ –æ–ø–∏—Å–∞–Ω–∏—è, –ø–æ—ç—Ç–æ–º—É –æ–Ω–∏ —Å—É—â–µ—Å—Ç–≤—É—é—Ç –Ω–µ –¥–ª—è –≤—Å–µ—Ö —á–∞–µ–≤. –î–µ–≥—É—Å—Ç–∞—Ü–∏–æ–Ω–Ω—ã—Ö –∑–∞–º–µ—Ç–æ–∫ –¥–ª—è –Ω–∞—à–µ–≥–æ —á–µ—Ä–Ω–æ–≥–æ —á–∞—è –Ω–µ —Å—É—â–µ—Å—Ç–≤—É–µ—Ç.
"–ö–∞—Ä—å–µ—Ä–Ω–∞—è –∫–∞—Ä–º–∞ –≤–æ—à–ª–∞ –≤ –º–æ—é –∂–∏–∑–Ω—å —Ç–æ–≥–¥–∞, –∫–æ–≥–¥–∞ —è –±–æ–ª—å—à–µ –≤—Å–µ–≥–æ –≤ –Ω–µ–π –Ω—É–∂–¥–∞–ª–∞—Å—å, –∏ –±—ã—Å—Ç—Ä–æ –ø–æ–º–æ–≥–ª–∞ –º–Ω–µ –ø—Ä–æ–π—Ç–∏ –∫—É—Ä—Å –æ–±—É—á–µ–Ω–∏—è. –ß–µ—Ä–µ–∑ –¥–≤–∞ –º–µ—Å—è—Ü–∞ –ø–æ—Å–ª–µ –æ–∫–æ–Ω—á–∞–Ω–∏—è —É—á–µ–±—ã —è –Ω–∞—à–µ–ª —Ä–∞–±–æ—Ç—É —Å–≤–æ–µ–π –º–µ—á—Ç—ã, –∫–æ—Ç–æ—Ä–∞—è —Å–æ–æ—Ç–≤–µ—Ç—Å—Ç–≤–æ–≤–∞–ª–∞ –º–æ–∏ —Ü–µ–Ω–Ω–æ—Å—Ç–∏ –∏ —Ü–µ–ª–∏ –≤ –∂–∏–∑–Ω–∏! "
–í–µ–Ω–µ—Ä–∞, –∏–Ω–∂–µ–Ω–µ—Ä-–ø—Ä–æ–≥—Ä–∞–º–º–∏—Å—Ç Rockbot
–ß—Ç–æ–±—ã –Ω–∞—à–∞ –ø—Ä–æ–≥—Ä–∞–º–º–∞ –Ω–µ –≤–æ–∑–≤—Ä–∞—â–∞–ª–∞ None , –º—ã —Ö–æ—Ç–∏–º, —á—Ç–æ–±—ã –Ω–∞—à –∫–æ–¥ –≤–æ–∑–≤—Ä–∞—â–∞–ª —É–≤–µ–¥–æ–º–ª–µ–Ω–∏–µ. –≠—Ç–æ —Å–æ–æ–±—â–µ–Ω–∏–µ –¥–æ–ª–∂–Ω–æ –∏–Ω—Ñ–æ—Ä–º–∏—Ä–æ–≤–∞—Ç—å –Ω–∞—Å –æ —Ç–æ–º, —á—Ç–æ –≤–∫—É—Å–æ–≤—ã–µ –Ω–æ—Ç–∫–∏ –¥–ª—è —ç—Ç–æ–≥–æ —á–∞—è –µ—â–µ –Ω–µ–¥–æ—Å—Ç—É–ø–Ω—ã.
–ü—Ä–∏–≤–µ–¥–µ–Ω–Ω–∞—è –Ω–∏–∂–µ –ø—Ä–æ–≥—Ä–∞–º–º–∞ –∏–∑–≤–ª–µ–∫–∞–µ—Ç –≤–∫—É—Å–æ–≤—ã–µ –∑–∞–º–µ—Ç–∫–∏ –∏–∑ —Å–ª–æ–≤–∞—Ä—è, —Å–æ–¥–µ—Ä–∂–∞—â–µ–≥–æ –∏–Ω—Ñ–æ—Ä–º–∞—Ü–∏—é –æ –Ω–∞—à–µ–º —á–µ—Ä–Ω–æ–º —á–∞–µ. –ù–∞—à–∞ –ø—Ä–æ–≥—Ä–∞–º–º–∞ –≤–æ–∑–≤—Ä–∞—â–∞–µ—Ç —Å–æ–æ–±—â–µ–Ω–∏–µ, –µ—Å–ª–∏ –≤–∫—É—Å–æ–≤—ã–µ –∑–∞–º–µ—Ç–∫–∏ –Ω–µ–¥–æ—Å—Ç—É–ø–Ω—ã:
–ù–∞—à —Å–ª–æ–≤–∞—Ä—å black_tea –Ω–µ —Å–æ–¥–µ—Ä–∂–∏—Ç –∑–Ω–∞—á–µ–Ω–∏—è –¥–ª—è –∫–ª—é—á–∞ –≤–∫—É—Å_notes, –ø–æ—ç—Ç–æ–º—É –Ω–∞—à–∞ –ø—Ä–æ–≥—Ä–∞–º–º–∞ –≤–æ–∑–≤—Ä–∞—â–∞–µ—Ç —Å–ª–µ–¥—É—é—â–µ–µ —Å–æ–æ–±—â–µ–Ω–∏–µ:
–í–∫—É—Å–æ–≤—ã–µ –∑–∞–º–µ—Ç–∫–∏ –¥–ª—è —ç—Ç–æ–≥–æ —á–∞—è –ø–æ–∫–∞ –Ω–µ–¥–æ—Å—Ç—É–ø–Ω—ã.
Python Dictionary get () vs. dict [key]
–û–¥–∏–Ω –æ–±—â–∏–π –º–µ—Ç–æ–¥, –∏—Å–ø–æ–ª—å–∑—É–µ–º—ã–π –¥–ª—è –¥–æ—Å—Ç—É–ø–∞ –∫ –∑–Ω–∞—á–µ–Ω–∏—é –≤ —Å–ª–æ–≤–∞—Ä–µ –∑–∞–∫–ª—é—á–∞–µ—Ç—Å—è –≤ —Å—Å—ã–ª–∫–µ –Ω–∞ –µ–≥–æ –∑–Ω–∞—á–µ–Ω–∏–µ —Å –∏—Å–ø–æ–ª—å–∑–æ–≤–∞–Ω–∏–µ–º —Å–∏–Ω—Ç–∞–∫—Å–∏—Å–∞ dict [key].
–†–∞–∑–Ω–∏—Ü–∞ –º–µ–∂–¥—É —Å–∏–Ω—Ç–∞–∫—Å–∏—Å–æ–º dict [key] –∏ dict.get () –∑–∞–∫–ª—é—á–∞–µ—Ç—Å—è –≤ —Ç–æ–º, —á—Ç–æ –µ—Å–ª–∏ –∫–ª—é—á –Ω–µ –Ω–∞–π–¥–µ–Ω —Å –∏—Å–ø–æ–ª—å–∑–æ–≤–∞–Ω–∏–µ–º —Å–∏–Ω—Ç–∞–∫—Å–∏—Å–∞ dict [key], –≤–æ–∑–Ω–∏–∫–∞–µ—Ç –æ—à–∏–±–∫–∞ KeyError. –ï—Å–ª–∏ –≤—ã –∏—Å–ø–æ–ª—å–∑—É–µ—Ç–µ dict.get () –∏ –∫–ª—é—á –Ω–µ –Ω–∞–π–¥–µ–Ω, –∫–æ–¥ –≤–µ—Ä–Ω–µ—Ç None (–∏–ª–∏ –ø–æ–ª—å–∑–æ–≤–∞—Ç–µ–ª—å—Å–∫–æ–µ –∑–Ω–∞—á–µ–Ω–∏–µ, –µ—Å–ª–∏ –≤—ã –µ–≥–æ —É–∫–∞–∂–µ—Ç–µ).
–í–æ—Ç —á—Ç–æ –ø—Ä–æ–∏–∑–æ–π–¥–µ—Ç, –µ—Å–ª–∏ –º—ã –ø–æ–ø—ã—Ç–∞–µ–º—Å—è –∏—Å–ø–æ–ª—å–∑–æ–≤–∞—Ç—å dict [–∫–ª—é—á] —Å–∏–Ω—Ç–∞–∫—Å–∏—Å –¥–ª—è –∏–∑–≤–ª–µ—á–µ–Ω–∏—è –≤–∫—É—Å–æ–≤—ã—Ö_–∑–∞–º–µ—Ç–æ–∫ –∏–∑ —Å–ª–æ–≤–∞—Ä—è, –≤ –∫–æ—Ç–æ—Ä–æ–º –æ—Ç—Å—É—Ç—Å—Ç–≤—É–µ—Ç —ç—Ç–æ—Ç –∫–ª—é—á:
–ü–æ—Å–∫–æ–ª—å–∫—É –≤–∫—É—Å_notes –æ—Ç—Å—É—Ç—Å—Ç–≤—É–µ—Ç –≤ –Ω–∞—à–µ–º —Å–ª–æ–≤–∞—Ä–µ black_tea, –Ω–∞—à –∫–æ–¥ –≤–æ–∑–≤—Ä–∞—â–∞–µ—Ç —Å–ª–µ–¥—É—é—â—É—é –æ—à–∏–±–∫—É:
–ó–∞–∫–ª—é—á–µ–Ω–∏–µ
dict.get () –∏—Å–ø–æ–ª—å–∑—É–µ—Ç—Å—è –≤ Python –¥–ª—è –ø–æ–ª—É—á–µ–Ω–∏—è –∑–Ω–∞—á–µ–Ω–∏—è –∏–∑ —Å–ª–æ–≤–∞—Ä—è. dict.get () –ø–æ —É–º–æ–ª—á–∞–Ω–∏—é –≤–æ–∑–≤—Ä–∞—â–∞–µ—Ç None, –µ—Å–ª–∏ —É–∫–∞–∑–∞–Ω–Ω—ã–π –≤–∞–º–∏ –∫–ª—é—á –Ω–µ –º–æ–∂–µ—Ç –±—ã—Ç—å –Ω–∞–π–¥–µ–Ω. –° –ø–æ–º–æ—â—å—é —ç—Ç–æ–≥–æ –º–µ—Ç–æ–¥–∞ –≤—ã –º–æ–∂–µ—Ç–µ —É–∫–∞–∑–∞—Ç—å –≤—Ç–æ—Ä–æ–π –ø–∞—Ä–∞–º–µ—Ç—Ä, –∫–æ—Ç–æ—Ä—ã–π –±—É–¥–µ—Ç –≤–æ–∑–≤—Ä–∞—â–∞—Ç—å –Ω–∞—Å—Ç—Ä–∞–∏–≤–∞–µ–º–æ–µ –∑–Ω–∞—á–µ–Ω–∏–µ –ø–æ —É–º–æ–ª—á–∞–Ω–∏—é, –µ—Å–ª–∏ –∫–ª—é—á –Ω–µ –Ω–∞–π–¥–µ–Ω.
–í—ã —Ç–∞–∫–∂–µ –º–æ–∂–µ—Ç–µ –∏—Å–ø–æ–ª—å–∑–æ–≤–∞—Ç—å —Å–∏–Ω—Ç–∞–∫—Å–∏—Å dict [key] –¥–ª—è –ø–æ–ª—É—á–µ–Ω–∏—è –∑–Ω–∞—á–µ–Ω–∏–µ –∏–∑ —Å–ª–æ–≤–∞—Ä—è. –ï—Å–ª–∏ –≤—ã –∏—Å–ø–æ–ª—å–∑—É–µ—Ç–µ —Å–∏–Ω—Ç–∞–∫—Å–∏—Å dict [key] –∏ –ø—Ä–æ–≥—Ä–∞–º–º–∞ –Ω–µ –º–æ–∂–µ—Ç –Ω–∞–π—Ç–∏ —É–∫–∞–∑–∞–Ω–Ω—ã–π –≤–∞–º–∏ –∫–ª—é—á, –∫–æ–¥ –≤–µ—Ä–Ω–µ—Ç KeyError. –ü–æ—Å–∫–æ–ª—å–∫—É —ç—Ç–æ—Ç —Å–∏–Ω—Ç–∞–∫—Å–∏—Å –≤–æ–∑–≤—Ä–∞—â–∞–µ—Ç –æ—à–∏–±–∫—É, –∏—Å–ø–æ–ª—å–∑–æ–≤–∞–Ω–∏–µ –º–µ—Ç–æ–¥–∞ dict.get () —á–∞—Å—Ç–æ –±–æ–ª–µ–µ —É–º–µ—Å—Ç–Ω–æ.
–¢–µ–ø–µ—Ä—å –≤—ã –≥–æ—Ç–æ–≤—ã –Ω–∞—á–∞—Ç—å –ø–æ–ª—É—á–µ–Ω–∏–µ –∑–Ω–∞—á–µ–Ω–∏–π –∏–∑ —Å–ª–æ–≤–∞—Ä—è Python —Å –ø–æ–º–æ—â—å—é dict.get () –∫–∞–∫ –ø—Ä–æ—Ñ–µ—Å—Å–∏–æ–Ω–∞–ª! –ß—Ç–æ–±—ã –ø–æ–ª—É—á–∏—Ç—å —Ä–µ–∫–æ–º–µ–Ω–¥–∞—Ü–∏–∏ –ø–æ –∫—É—Ä—Å–∞–º Python –∏ —É—á–µ–±–Ω—ã–º —Ä–µ—Å—É—Ä—Å–∞–º, –æ–∑–Ω–∞–∫–æ–º—å—Ç–µ—Å—å —Å –Ω–∞—à–∏–º —Ä—É–∫–æ–≤–æ–¥—Å—Ç–≤–æ–º –ø–æ –∏–∑—É—á–µ–Ω–∏—é Python .
