TGINSIGHT SIMILAR POSTS
Изворен канал @pythonotes · Post #83 · 11 мај
У строки в Python есть два очень похожих метода. На столько похожих что кажется они делают одно и тоже. Это метод isdigit() и isnumeric() Давайте посмотрим зачем нам два одинаковых метода? И так ли они одинаковы? Очевидно что isdigit() говорит нам, состоит ли строка только из чисел 0-9 >>> '12'.isdigit() True >>> '12x'.isdigit() False >>> '-12'.isdigit() False >>> '12.5'.isdigit() False Можно предположить что isnumeric() делает более глубокий анализ и распознаёт в строке float или отрицательное число. >>> '15'.isnumeric() True >>> '-15'.isnumeric() False >>> '15.2'.isnumeric() False Нет, всё так же как и с другим методом. В чем же тогда разница? Для начала посмотрим следующие примеры: >>> '5'.isdigit(), '5'.isnumeric() # Обычная цифра 5 # True, True >>> '꧕'.isdigit(), '꧕'.isnumeric() # Яванская 5 # True, True >>> '෩'.isdigit(), '෩'.isnumeric() # Синхала 3 # True, True >>> '৩'.isdigit(), '৩'.isnumeric() # Бенгальская 3 # True, True >>> '༣'.isdigit(), '༣'.isnumeric() # Тибетская 3 # True, True >>> '³'.isdigit(), '³'.isnumeric() # 3 верхний индекс (степень) # True, True >>> '𝟝'.isdigit(), '𝟝'.isnumeric() # Математическая двойная 5 # True, True >>> '๔'.isdigit(), '๔'.isnumeric() # Тайская 4 # True, True >>> '➑'.isdigit(), '➑'.isnumeric() # 8 в круге # True, True А теперь примеры в которых, по мнению Python, результаты не равны >>> '¾'.isdigit(), '¾'.isnumeric() # дробь три четверти # False, True >>> '⅕'.isdigit(), '⅕'.isnumeric() # дробь одна пятая # False, True >>> '𒐶'.isdigit(), '𒐶'.isnumeric() # клинопись 3 # False, True >>> '三'.isdigit(), '三'.isnumeric() # 3 из унифицированной идеограммы # False, True >>> '⑩'.isdigit(), '⑩'.isnumeric() # цифра 10 в круге # False, True >>> 'Ⅳ'.isdigit(), 'Ⅳ'.isnumeric() # Римская 4 # False, True >>> '𑇪'.isdigit(), '𑇪'.isnumeric() # Сенегальская архаическая 10 # False, True >>> '𐌢'.isdigit(), '𐌢'.isnumeric() # Этрусская цифра 10 # False, True >>> 'ↂ'.isdigit(), 'ↂ'.isnumeric() # Римская цифра 10000 # False, True >>> '〇'.isdigit(), '〇'.isnumeric() # Символ ККЯ ноль # False, True Получается, что isdigit() говорит нам, является ли символ десятичной цифрой или спецсимволом, имеющим цифирное значение после преобразования. В свою очередь isnumeric() включает все дополнительные символы юникода которые имеют отношения к числовым и цифровым представлениям. Ну и пара примеров в которых в обоих случаях символ не является числом, это эмодзи. >>> '🕙'.isdigit(), '🕙'.isnumeric() # эмодзи 10 часов # False, False >>> '7️⃣'.isdigit(), '7️⃣'.isnumeric() # эмодзи 7 # False, False Также есть еще один дополнительный и весьма полезный метод isdecimal(). Он нам сообщает, можно ли из указанного символа сделать простую десятичную цифру. То есть сработает ли метод int(x) >>> '෩'.isdecimal(), int('෩') # Синхала 3 # True, 3 >>> '➑'.isdecimal(), int('➑') # 8 в круге # False, ValueError Какие выводы? 🔸 При определении цифры в строке isdigit() подходит лучше чем isnumeric(), но оба не гарантируют успешную конвертацию в int 🔸 Для однозначного определения возможности преобразования строки в int лучше подходит метод isdecimal() 🔸 Для однозначного определения символов 0...9 лучше использовать regex Полный список символов юникода которые определяются как numeric #basic
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Пребарај: #revaya
@MOONIVRSE · Post #49110 · 24.04.2023 г., 12:21
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@MOONIVRSE · Post #49107 · 24.04.2023 г., 04:58
👩🏻🚀🌧: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #Space called "Yeri" from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #revaya . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
@MOONIVRSE · Post #49104 · 24.04.2023 г., 04:51
👩🏻🚀🌧: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #Space called "Karina" from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #revaya . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
@MOONIVRSE · Post #49101 · 24.04.2023 г., 03:07
👩🏻🚀🌧: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #Space called "Chaewon" from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #revaya . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
@MOONIVRSE · Post #49098 · 24.04.2023 г., 03:04
👩🏻🚀🌧: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #Space called "Bae" from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #revaya . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
@MOONIVRSE · Post #49095 · 24.04.2023 г., 02:57
👩🏻🚀🌧: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #Space called "Sullyoon" from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #revaya . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
@MOONIVRSE · Post #49092 · 24.04.2023 г., 00:08
👩🏻🚀🌧: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #Space called "J STAYC" from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #revaya . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
@MOONIVRSE · Post #49089 · 24.04.2023 г., 00:05
👩🏻🚀🌧: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #Space called "jihoon" from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #revaya . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
@MOONIVRSE · Post #49086 · 24.04.2023 г., 00:02
👩🏻🚀🌧: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #Space called "Minji" from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #revaya . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
@MOONIVRSE · Post #49083 · 23.04.2023 г., 19:25
👩🏻🚀🌧: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #Space called "So Junghwan" from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #revaya . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
@MOONIVRSE · Post #49080 · 23.04.2023 г., 19:03
👩🏻🚀🌧: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #Space called "Ryujin" from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #revaya . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)
@MOONIVRSE · Post #49077 · 23.04.2023 г., 18:21
👩🏻🚀🌧: *𝗕𝗢𝗢𝗠* 🤯🤯 Woah 😵💫😵... What was that 🤔🤔? Its was a super-duper big *boom* 💥💥 that just come to our 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹 𝗺𝗼𝗼𝗻 🌑🌕, and look. They giving us a super-duper adorable 𝗽𝗮𝗰𝗸𝗮𝗴𝗲 📦📦, lets check it now! Ooh 😯😯, its a #Space called "Soobin" from our 𝗳𝗿𝗶𝗲𝗻𝗱𝘀 👨👩👧👦, which is #revaya . Ah, thank you @moonivrse lets check the licence first! Oh, its only for PU (Personal Use)