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
Respect the Spindle
by Abby Franquemont
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Enjoying a resurgence in popularity thanks to the current trend of DIY crafts, the hand spindle remains one of the most productive, versatile, and convenient tools for creating stunning fiber arts from home, as this beautifully illustrated guide from a veteran spinner and spindle aficionado demonstrates. With step-by-step instructions, this essential manual details the basic steps of spinning and then advances to the more complicated spinning wheel, showing how to use the spindle to make specific types of yarn, explaining traditional spindle spinning techniques, and detailing five simple projects designed to instill confidence in creating a variety of yarns with this simple tool. Combining fascinating historical narratives, traditions, and cultures from around the globe with vivid photography, this all-encompassing tour of the spindle also boasts easy-to-follow, contemporary techniques and styles that affirm the tool's enduring legacy.
#spinning
More thoughts on spinning.
I hope you'll indulge me with this detour/personal journey of mine.
Processing and spinning wool seems an unnecessary and tedious task when there is everything else to worry about. However, some animals, like sheep, can be dual purpose. Why not learn to utilize what else they have to offer?
For some of us, the fiber is so worthwhile that we'd keep animals just for that purpose alone! (Hence my alpaca obsession - plus they are cheap therapy!)
The reason why I'm starting to love spinning is because it is a mindful, yet mindless task that you can simply pick up and tend to without thought. Just feeling, stretching, twirling.
With knitting, you must actively think. Processing and spinning fiber is a perfect complement to the art, a duty to put thoughts to rest and focus only on how the fiber feels.
It's not about getting it done quickly, it's not about profit. It's about enjoying your time and feeling empowered in what you're able to create with your own hands.
#spinning#alpaca
Elaborating on the Removal of Vegetable Matter (specifically when there's a lot of it)
And thoughts on your environment's impact on how dirty your fleece gets
#spinning#alpaca
How things are going.
This is a Golding top whorl drop spindle. They kindly sent me some kind of hideous fiber to experiment with, which I gladly did, although I found it awful to work with. Probably not the best intro to spinning.
I skirted and clouded a small portion of Obsidian's fleece to see how it does in comparison. My hand carders are still sitting in my PO box, so I still have to wait for that - it makes the fluffing easier. No wash, just taking bits of vegetable matter out, and I gotta tell ya, it is really messy. Fluffing and picking seemed to get a lot of dust out, so spinning isn't that dirty, actually. It may even be giving it more grip.
It is far easier to spin that I expected. People say alpaca is not a good wool to start with because it's too slippery, but I found it extremely easy to draft and spin evenly. It may have something to do with the generous 3" of staple length.
I will try to record a short video of the skirting process tomorrow.
Still new, but learning.
#spinning#alpaca
Thus begins the processing of raw alpaca wool for the first time - just so you know what my time is occupied by.
Once I master this, I will be happy to share the process.
I am learning to spin as well, and hopefully will produce a skein in not too much time.
This comes from our alpaca Obsidian, a gentle fellow who's very intelligent and sensitive.
#spinning#alpaca