Теперь запакуем строку.
В этом случае следует передавать тип данных bytes.
>>> struct.pack('=s', b'a')
b'a'
Для записи слова следует указывать количество символов.
>>> struct.pack('=5s', b'hello')
b'hello'
Кстати, запакованный вид соответствует исходному тексту. Всё верно, символ есть в таблице ASCII, то есть его код попадает в диапазон 0-127, он может быть записан одним байтом и имеет визуальное представление. А вот что будет если добавить символ вне ASCII
>>> struct.pack(f'=s', b'ё')
SyntaxError: bytes can only contain ASCII literal characters.
Ошибка возникла еще на этапе создания объекта bytes, который не может содержать такой символ. Поэтому надо кодировать эти байты из строки.
>>> enc = 'ёжик'.encode('utf-8')
>>> struct.pack(f'={len(enc)}s', enc)
b'\xd1\x91\xd0\xb6\xd0\xb8\xd0\xba'
Заметьте, длина такой строки в байтах отличается от исходной длины, так как символы вне ASCII записываются двумя байтами и более. Поэтому здесь формат создаём на лету, используя получившуюся длину как каунтер токена.
#libs#basic
🌎 The Falkland Islands are home to the only known population of the Cobb’s wren, a small brown bird found nowhere else on Earth. These birds thrive in predator-free habitats, showing how isolated islands can protect unique species from extinction. ✨
#biodiversity⚡#islands⚡#birds
👉subscribe Interesting Planet
🌎 Border oddities abound in Earth’s geography! The Diomede Islands, just 4 km apart in the Bering Strait, belong to different countries and are separated by the International Date Line, meaning they are 21 hours apart in time despite being visible from each other. ✨
#geography⚡#borders⚡#islands
👉subscribe Interesting Planet
🚤Nusa Penida could be home to a floating hospital
🏥 Nusa Penida leaders are proposing a water ambulance service to respond quickly to emergencies.
🚨 There are currently no major hospitals on the islands of Nusa Penida, Nusa Lembongan and Nusa Ceningan near Bali. The small clinics that do exist are unable to treat emergencies and patients have to be brought to Bali by boat or evacuated by helicopter.
@BaliNews
#goodnews#health#islands
🌍 One of the youngest islands on Earth, Hunga Tonga-Hunga Haʻapai, formed in 2015 after an undersea volcanic eruption. New land like this is rare and offers scientists a natural laboratory. ✨
#islands⚡#volcanoes⚡#geography⚡#nature⚡#earth
👉subscribe Amazing Geography
👉more Channels
🌎 The double coconut palm of Seychelles produces the world’s heaviest seed—up to 18 kilograms! Its giant, heart-shaped seed takes years to mature before dropping to the forest floor. ✨
#botany⚡#islands⚡#wonders
👉subscribe Interesting Planet
🌍 The Canadian Arctic Archipelago includes over 36,000 islands, making it one of the most complex island groups on Earth. These remote lands are mostly uninhabited and covered by ice much of the year. ✨
#islands⚡#arctic⚡#geography⚡#nature⚡#earth
👉subscribe Amazing Geography🌍
🌍 Canada’s Manitoulin Island is the largest freshwater island in the world. It’s so big that it contains more than 100 lakes, and some of those lakes have islands of their own. ✨
#islands⚡#freshwater⚡#geography⚡#nature⚡#earth
👉subscribe Amazing Geography
👉more Channels
The Philippines is an archipelago with about 7,641 islands. Around 2,000 islands are inhabited. More than 5,000 islands are unnamed. The islands are grouped into Luzon, Visayas, and Mindanao. The older count of 7,107 islands was updated after modern surveys.
🇵🇭🏝️🌊
[Read More]
@googlefactss
#Philippines#Islands#Geography#DidYouKnow#Facts
🌍 In recent decades, a growing number of small island nations are seeing rising sea levels drive migration, forcing some communities to relocate entirely from their ancestral homes. ✨
#migration⚡#islands⚡#climate⚡#geography⚡#nature⚡#earth
👉subscribe Amazing Geography🌍
🌍 The ancient terraces of the Canary Islands blend natural volcanic slopes with centuries-old farming. These landscapes are so unique they’re recognized globally as a heritage site. ✨
#heritage⚡#agriculture⚡#islands⚡#geography⚡#nature⚡#earth
👉subscribe Amazing Geography
👉more Channels
🌍 Indonesia is the world’s largest archipelago, made up of over 17,000 islands. Some, like Java, are densely populated, while others remain so remote they still hold undiscovered plant species. ✨
#archipelago⚡#islands⚡#biodiversity⚡#geography⚡#nature⚡#earth
👉subscribe Amazing Geography
👉more Channels