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
Welcome, New Space Cadets! 💫
Since Monday, we've welcomed an incredible 600k new space cadetsto our mission! 🚀 With so many explorers joining, here's a quick reminder about the journey ahead.
Your ship and crew are built for one epic trip only. After each successful mission to the moon, you level up and need to construct a brand new spaceship🚀 and recruit a fresh crew to set off on your next journey.
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ℹ️ For more info, check the mission manual here.
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👉Start your To The Moon adventure now!👈
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Can You Catch The LEPrechaun? 🍀
Hey Space Cadets!
We're excited to announce a fantastic new partnership with LEPrechaun🎩! This summer, LEPrechaun is bringing a bottomless pot of $LEP coins - and you've got a chance to join the gold rush. Join their pre-launch on Telegram now and secure an airdrop for early users!
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Don't miss out on this stellar opportunity!
👉Start your To The Moon adventure now!👈
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#ToTheMoon#MoonPlay#LEPrechaun#partnership#ecosystem#blockchain#gamefi#web3#wenlisting#squad#rank#communityfirst#taptap#clicker#game