Получить все индексы пустых строк в python

Question

Есть текст:

Put you on the rocks too, baby (Yeah) Bring you to the block too, baby (Yeah) What you want? 'Cause I want you, yeah (Oow) Ah, ah, ah, ah, ah, ah, ah, in love with you (Yeah, baby, ooh) Drop, drop, drop, drop, drop, drop, drop, yeah (Yeah, baby)

You know my buddies saying Leck, leck, leck, leck, leck, leck, leck You know my girlies saying Leck, leck, leck, leck, leck, leck, leck Ah, and everybody saying

Полностью весь текст:

Как получить все индексы ( если они есть ) пустых строк в тексте? Может быть возможно узнать индексы всех невидимых "/n/n" в тексте?

Answer 1

s = '''Know you see that they been tryna be me lately I'm a heavy hitter like Gervonta Davis That shit ain't gon' save 'em, leave 'em on the pavement All I know is get this motherfuckin' paper

[Chorus: Lil Baby] Thou shall not try one of us, if they do, I'ma bust Please don't reach for no chain Not 'bout the set, but it's more 'bout respect If they get me upset, they gon' die, that's on gang

Know you see that they been tryna be me lately I'm a heavy hitter like Gervonta Davis That shit ain't gon' save 'em, leave 'em on the pavement All I know is get this motherfuckin' paper




[Chorus: Lil Baby] Thou shall not try one of us, if they do, I'ma bust Please don't reach for no chain Not 'bout the set, but it's more 'bout respect If they get me upset, they gon' die, that's on gang'''
 
 
 
def findall(sub, string):
    index = -1
    try:
        while True:
            index = string.index(sub, index + 1)
            yield index
    except ValueError:
        pass
 
for i in findall('\n\n', s):
    print(i)

На основе ответа @intuited

https://ideone.com/A0BxO5

Ещё можно так:

import re
res = [m.start() for m in re.finditer(r'(?=(\n\n))', s)]

На основе ответа @moinudin

Answer 2

text = """An example using weather data provided by the API at OpenWeatherMap
Introduction

Want to know how to use PostgreSQL' s great functionality to work with JSON objects?

Novelties

Here is a concise list of the most important new features:

    new datatype: json
    new operators: ->, ->>, #> and #>>
    new functions: json_array_length, json_extract_path, json_array_elements and many more

The full list of JSON specific functions can be found at:

https://www.postgresql.org/docs/9.3/static/functions-json.html.
General Usage of the Operators

Let’s get a quick overview concerning the main usage and differences among the three operators.

The operators -> and ->> are easy to use and allow you to point to a specific child element."""

print([a for a, b in enumerate(text.split('\n')) if not b])
# [2, 4, 6, 8, 12, 14, 17, 19]

Для файла это будет выглядеть так

file = open('example.txt', 'r', encoding='utf-8')
print([a for a, b in enumerate(file.readlines()) if b == '\n'])
file.close()
# [2, 4, 6, 8, 12, 14, 17, 19]

БЛОГ НА HUSL

Получить все индексы пустых строк в python

Ответы (2 шт):