Ранее я делал серию постов про битовые операторы.
Вот вам ещё один наглядный пример как это используется в Python в модуле re.
Чтобы указать флаг для компилятора нам надо указать его после передаваемой строки. Например, добавляем флаг для игнорирования переноса строки.
pattern = re.compile(r"(\w+)+")
words = pattern.search(text, re.DOTALL)
А как указать несколько флагов? Ведь явно будут ситуации когда нам потребуется больше одного. Кто читал посты по битовые операторы уже понял как.
pattern.search(text, re.DOTALL | re.VERBOSE)
А теперь смотрим исходники, что находится в этих атрибутах?
Не удивительно, степени двойки. Почему? Потому что каждое следующее значение это сдвиг единицы влево.
>>> for n in [1, 2, 4, 8, 16, 32, 64, 128, 256]:
>>>
print(bin(n))
0b1
0b10
0b100
0b1000
0b10000
0b100000
0b1000000
0b10000000
0b100000000
Чтобы было понятней, давайте напишем тоже самое но иначе, добавим ведущие нули:
000000001
000000010
000000100
000001000
000010000
000100000
001000000
010000000
100000000
Не понятно что тут происходит? Читай три поста про битовые операторы начиная с этого ➡️https://t.me/pythonotes/45
В общем, это пример применения побитовых операций в самом Python.
Теперь вы знаете Python еще немного лучше)
#tricks#regex#libs
📣COMING UP
Join our Head of Health Emergency Preparedness, Dr Biodun Ogunniyi as he gives update on #Cholera response in Nigeria.
Tune in LIVE on NTA to join the conversation
📡DSTV: CH 251
📡GOTV: CH 114
🕥 9:00 pm
As of 29th September, over 10,000 suspected cases of #cholera have been recorded from the 36 States + FCT.
The ongoing cholera outbreak has been worsened by limited access to clean water, open defecation, & poor hygiene practices in affected communities.
🔗Download the situation report
https://ncdc.gov.ng/diseases/sitreps/?cat=7&name=An%20update%20of%20Cholera%20outbreak%20in%20Nigeria
In reporting week 32, the number of suspected cases of #cholera increased to 121 cases.
Our weekly situation report provides an update on the current #cholera epidemiological situation in Nigeria and our response activities.
🔗 Download via:
https://ncdc.gov.ng/diseases/sitreps/?cat=7&name=An%20update%20of%20Cholera%20outbreak%20in%20Nigeria
Our weekly #cholera situation report for weeks 28 and 29 has been uploaded.
The reports provide an update on the current #cholera epidemiological situation in Nigeria and our response activities.
🔗 Download via:
https://ncdc.gov.ng/diseases/sitreps/?cat=7&name=An%20update%20of%20Cholera%20outbreak%20in%20Nigeria
Your actions, no matter how small can limit the risk of #cholera infection.
🚫Do not defecate in open areas
🧤Clear your drainages
✅Only drink water from safe sources
✅Dispose of refuse properly in waste disposal sites
Public health advisory⬇️
🔗https://ncdc.gov.ng/news/513/stop-cholera%3A-public-health-advisory
Our weekly #cholera situation report for week 27 has been uploaded.
The report provides an update on the current #cholera epidemiological situation in Nigeria and our response activities.
🔗 Download via:
https://ncdc.gov.ng/diseases/sitreps/?cat=7&name=An%20update%20of%20Cholera%20outbreak%20in%20Nigeria
Our #cholera situation reports are now weekly.
The reports provide an update on the #cholera epidemiological situation in Nigeria and our response activities.
🔗 Download via:
https://ncdc.gov.ng/diseases/sitreps/?cat=7&name=An%20update%20of%20Cholera%20outbreak%20in%20Nigeria
The bacteria, Vibrio cholerae, that causes #cholera is commonly found in contaminated water and food.
Protect yourself.
Read our public health advisory on measures to take to prevent yourself from getting infected. ⬇️
🔗
https://ncdc.gov.ng/news/513/stop-cholera%3A-public-health-advisory
📣ICYMI
The Incident Manager of our National #Cholera Technical Working Group, Mr Sebastian Yennan, was live on Arise TV to discuss the ongoing #cholera outbreak.
🔗 Catch up and share via
https://youtu.be/rVHP5kRU4bw?si=aIMQiFD9Uo3qjCND
#Cholera Situation Report
Our monthly Cholera Situation Report for May 2024 has been published on our website.
🔗You can download, read and share via
https://ncdc.gov.ng/diseases/sitreps/?cat=7&name=An%20update%20of%20Cholera%20outbreak%20in%20Nigeria
Severe cases of #cholera can cause death within hours due to dehydration.
Recognise the signs and symptoms to ensure you seek early healthcare and treatment if suspected.
Unwashed hands, untreated water, and uncovered food are some of the ways #Cholera germs are spread.
Personal and environmental hygiene remains one of the best ways to STOP #Cholera.
Watch this little boy's story on cholera:
https://www.youtube.com/watch?v=jG1VNSCsP5Q