Функция sub в regex может принимать функцию в качестве аргумента repl.
📄 Из документации:
If repl is a function, it is called for every non-overlapping occurrence of pattern. The function takes a single match object argument, and returns the replacement string.
То есть для каждого совпадения будет вызвана функция для вычисления замены вместо замены на одну и ту же строку для всех совпадений.
Иными словами, для замены разных совпадений на разные строки не потребуется запускать re.sub() много раз для каждой строки замены. Достаточно определить функцию, которая вернёт строку для каждого из совпадений.
Описание слишком запутанное🤔, давайте лучше рассмотрим на простом примере:
Создаем карту замены. То есть какие строки на какие требуется менять.
remap = {
'раз': '1',
'два': '2',
'три': '3',
'четыре': '4',
'пять': '5',
}
Пишем функцию поиска строки для замены. Единственным аргументом будет объект re.Match.
Используя данные этого объекта мы вычисляем замену on-the-fly!
def get_str(match: re.Match):
word = match.group(1)
return remap.get(word.lower()) or word
Пример текста.
text = '''Раз Два Три Четыре Пять
Вместе будем мы считать
Пять Четыре Три Два Раз
Мы считать научим вас
'''
Теперь запускаем re.sub и вместо строки замены (repl) подаём имя функции.
(Данный паттерн ищет отдельные слова в тексте)
>>> print(re.sub(r'(\w+)', get_str, text))
1 2 3 4 5
Вместе будем мы считать
5 4 3 2 1
Мы считать научим вас
Думаю, достаточно наглядно 🤓
#libs#regex
🇷🇺🇺🇳 Foreign Minister Sergey Lavrov & Secretary-General of the United Nations António Guterres meet on the sidelines of the UN General Assembly's 77th Session's High-Level Week.
#UNGA77
#UNCharterIsOurRules
🇺🇳 The High-Level Week of the 77th Session of the UN General Assembly has come to an end.
#Day4 main highlight 👉 FM Sergey Lavrov's Remarks at the General Debate.
The Minister touched upon the most topical issues on the international agenda.
📹 The essence of the speech in 1 minute.
#UNGA77
🇺🇳 The UN HQ is where it's at! The High-Level Week of the 77th UNGA Session continues as does our coverage!
🎥 On #Day3 (Sept 23), the Russian delegation led by Sergey Lavrov kept busy. Sorry to disappoint certain Western colleagues, but no "isolation" in sight:
• Talks with President of Serbia and President of Guinea-Bisau
• Talks with Chairman of the Transitional Sovereignty Council of Sudan
• Meetings and talks with Foreign Ministers of Serbia, Мexico, Ethiopia, Nicaragua, Laos, Jordan, Syria, Eritrea, Cuba, Equatorial Guinea, Mali, the UAE!
• Russia – Gulf Cooperation Council Ministerial
Stay tuned and follow our updates from New York!
#UNGA77
🛑#LIVE: Foreign Minister Sergey #Lavrov gives speech at the UNSC meeting on Ukraine
🔗https://www.ruptly.tv/en/events/202209221400-LIVE11963-UN-Security-Council-holds-high-level-debate-on-Ukraine
🔗https://mid.ru/en/press_service/video
🔗https://media.un.org/en/webtv
#UNGA77
Off we go! 🇺🇳
#Day1 highlights!
On September 21, Sergey Lavrov arrived to the United Nations Headquarters in New York to participate in the 77th Session of the UN General Assembly (#UNGA77).
🤝 On the first day the Minister's working schedule was packed:
• Working meeting of CSTO Foreign Ministers
• Talks with President of the CAR Faustin-Archange Touadéra and President of Switzerland Ignazio Cassis
• Meetings with Ministers of Foreign Affairs of China, Brazil, Bolivia and Egypt
• Meetings with President of the ICRC Peter Maurer and IAEA Director General Rafael Mariano Grossi
• Meeting in the Astana Format
• The signing of The Inter-Ministerial Consultations Plan between the Foreign Ministries of Russia and Venezuela
• Talks with President of the 77th UNGA session Csaba Kőrösi
Stay tuned for #Day2. Coming next!
Off we go! 🇺🇳
#Day1 highlights!
On September 21, Sergey Lavrov arrived to the United Nations Headquarters in New York to participate in the 77th Session of the UN General Assembly (#UNGA77).
🤝 On the first day the Minister's working schedule was packed:
• Working meeting of CSTO Foreign Ministers
• Talks with President of the CAR Faustin-Archange Touadéra and President of Switzerland Ignazio Cassis
• Meetings with Ministers of Foreign Affairs of China, Brazil, Bolivia and Egypt
• Meetings with President of the ICRC Peter Maurer and IAEA Director General Rafael Mariano Grossi
• Meeting in the Astana Format
• The signing of The Inter-Ministerial Consultations Plan between the Foreign Ministries of Russia and Venezuela
• Talks with President of the 77th UNGA session Csaba Kőrösi
Stay tuned for #Day2. Coming next!