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
Updated @RulesRulesBot:
Bringing you some much requested features:
- It is now possible to get the last set rules or welcome text with /getgreeting and /getrules. That way you don't have to recreate all the HTML formatting, but can copy, paste and edit.
- It will delete old messages (greetings and rules) after more than 5 minutes. Not always exactly 5 minutes, as the cleanup job might not run every minute.
- If you grant admin rights to delete messages to the bot, it will also clean up any /rules and /greet command messages when deleting the sent message that.
#update#RulesRulesBot
Updated@RulesRulesBot:
Will now check for syntax error regarding variable usage when you set new rules or greeting text.
If you have an error there, it is most likely because you wanted to use "{" or "}" in your text. It will now tell you that you can use {{ or }} to display those.
Note that HTML errors where Telegram doesn't accept the message still can't be checked as the bot doesn't send the text immediately.
#update#RulesRulesBot
Updated @BanWarnBot, added {user_id}, {user_url} and {user_link} variables. This way you can link the user. This is also the new default replacing the bold text, in case you did't set any greeting.
#RulesRulesBot#update
New beta feature for @RulesRulesBot:
Read-the-Rules Highscores.
When enabled with /enable_highscores@RulesRulesBot,
the bot will send a game message to your chat which allows the bot to send highscores if somebody reads the rules, who hasn't before or hasn't after a change in the rules.
This might engage reading the rules more, and provide an overview for admins if joined users clicked the rules links.
If you don't like it, just send /disable_highscores@RulesRulesBot, and delete the game message.
Note, the game message is needed for telegram to notify about changed highscores. If the message got accidentially deleted, it can be recreated with /enable_highscore@RulesRulesBot command, which will also restore the scores.
Screenshot: https://t.me/luckydonaldsbots/146
#RulesRulesBot#beta#update
It was brought to attention that with some bots admin commands were no longer working.
That was happining for the bots migrated yesterday, because of the new bot API version.
This is #fixed now.
Thanks for letting me know, A. A.!
#BanWarnBot#RulesRulesBot#JoinCaptchaBot
I will soon migrage some services onto a new server.
Therefore those services will be unavailable for the next two hours:
@JoinCaptchaBot@BanWarnBot@RulesRulesBot and @ForwardWhitelistBot.
#downtime
#JoinCaptchaBot#BanWarnBot#RulesRulesBot#ForwardWhitelistBot
I will definitely work hard to keep the most important group management services stable, including:
@JoinCaptchaBot, @RulesRulesBot, @BanWarnBot, and @HeyAdminBot. And for now also the less important @NoServiceBot.
#PermalinkBot#NoServiceBot#RulesRulesBot, #BanWarnBot#HeyAdminBot
#ongoing#issue