Breaking text into sentences in Python using NLTK

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To break a chunk of text into sentences in Python using NLTK, do the following.

Install NLTK:

pip install -U nltk

Download the punkt submodule in a Python REPL:

import nltk
nltk.download("punkt")
nltk.download("punkt_tab")

And then break the text into sentences:

import nltk

with open("my-big-file.txt") as file:
  raw = file.read()

sentences = nltk.tokenize.sent_tokenize(raw)