TGINSIGHT SIMILAR POSTS
Изворен канал @pythonotes · Post #65 · 8 апр.
Небольшой трик с регулярными выражениями который редко вижу в чужом коде. Допустим, вам нужно распарсить простой текст и вытащить оттуда пары имя+телефон. Вернуть всё это надо в виде списка словарей. Возьмем очень простой пример текста. >>> text = ''' >>> Alex:8999123456 >>> Mike:+799987654 >>> Oleg:+344456789 >>> ''' Соответственно, для выделения нужных элементов будем использовать группы. Получится такой паттерн: (\w+):([\d+]+) Как мы будем формировать словарь из найденных групп? >>> import re >>> results = [] >>> for match in re.finditer(r"(\w+):([\d+]+)", text): >>> results.append({ >>> "name": match.group(1), >>> "phone": match.group(2) >>> }) >>> print(results) [{'name': 'Alex', 'phone': '8999123456'}, ...] Можно немного сократить запись используя zip >>> results = [] >>> for match in re.finditer(r"(\w+):([\d+]+)", text): >>> results.append(dict(zip(['name', 'phone'], match.groups()))) Но есть способ лучше! Это именованные группы в regex. Можно в паттерне указать имя группы и результат сразу забрать в виде словаря. >>> for match in re.finditer(r"(?P<name>\w+):(?P<phone>[\d+]+)", text): >>> results.append(match.groupdict()) То есть всё что я сделал, это добавил в начале группы (внутри сбокочек) такую запись: (?P<group-name>...) Теперь найденная группа имеет имя и можно обратиться к ней как к элементу списка >>> name = match['name'] Либо забрать сразу весь словарь методом groupdict() >>> match.groupdict() #tricks#regex
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@vision11official · Post #1178 · 29.03.2023 г., 09:11
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@vision11official · Post #1098 · 01.02.2023 г., 11:04
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@vision11official · Post #1211 · 08.05.2023 г., 12:58
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@vision11official · Post #1206 · 27.04.2023 г., 09:59
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@vision11official · Post #1229 · 09.06.2023 г., 12:08
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@vision11official · Post #1220 · 25.05.2023 г., 14:01
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@vision11official · Post #1217 · 16.05.2023 г., 14:31
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@vision11official · Post #1221 · 27.05.2023 г., 10:08
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@vision11official · Post #1209 · 02.05.2023 г., 15:31
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@vision11official · Post #1213 · 12.05.2023 г., 11:31
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