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
The sunrays taking;
All the darkness away,
Love taking all hatred away,
Miniature hopes in shapes of stars,
Now subsiding in beautiful destiny,
Happiness taking all the pain away.
In midst the beautiful world,
I laid here,
Breathless,
My sould taken away by you,
My heart given to beat in someones
Else's cage,
My body drifted with fire,
My voice taken away by deafening silence,
My memories now, washed away,
Fading away with new ones.
This is how,
A beautiful day began,
Changing my life,
To be dreadful forever,
In midst the beautiful world,
I laid here as a dead lover.
#tyler#review
She's like a poem,
Waiting to be read.
She's like a song,
Waiting to be sung.
She's like a melody,
Waiting to be heard.
She's like a book,
Waiting to be understood.
She's like a dance,
Waiting to be performed.
She's like a beauty,
Waiting to be cherished.
She's like art,
Waiting to be crafted.
She's you,
Waiting to be found.
She's you,
Waiting to be loved.
She's not just a girl,
She's within all of you,
She resides somewhere inside,
Somewhere the golden rays don't reach,
Somewhere the silver shine doesn't work,
Somewhere in you,
She stays,
Waiting to be acknowledged.
#tyler#review
She's like a poem,
Waiting to be read.
She's like a song,
Waiting to be sung.
She's like a melody,
Waiting to be heard.
She's like a book,
Waiting to be understood.
She's like a dance,
Waiting to be performed.
She's like a beauty,
Waiting to be cherished.
She's like art,
Waiting to be crafted.
She's you,
Waiting to be found.
She's you,
Waiting to be loved.
She's not just a girl,
She's within all of you,
She resides somewhere inside,
Somewhere the golden rays don't reach,
Somewhere the silver shine doesn't work,
Somewhere in you,
She stays,
Waiting to be acknowledged.
#tyler#review
During a dreadful night,
I managed to put up a fight.
Maybe the strong me died,
And weak me survived.
The constant voices in my ears,
Here I am living in my fears.
Like a painful reminder of that night,
Where I lost a outnumbered fight.
Wondering if I am even right,
While holding myself tight.
The night is long dead,
Here my tears still wetting my bed.
That dreadful night,
The cause of my fright.
These thoughts make me shiver,
The fear making me quiver.
My painful screams,
Still haunting my dreams.
Maybe the strong in me died,
And weak me survived.
I haven't given up the fight,
Because I know,
I can still make it right.
#tyler#review
The correspondence of Tyler Robinson, a suspect in the murder of Charlie Kirk, with his transgender lover, with whom he lived, has been published. The name of the roommate is not mentioned.
#correspondence#tyler#robinson#suspect
#Trump#Democrats
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