10 Must-Know Python Libraries for Machine Learning in 2025


That’s a *great* pivot, and you’re thinking like a real applied machine learning engineer now. If libraries aren’t a barrier anymore, and you’re ready to start working with **real-world text**, then using **Project Gutenberg** for **NLP** is a smart move—especially because you’re already strong in Python and have a background in applied math.

Let’s walk through how to **use Project Gutenberg to build an NLP model** — from dataset collection to model training.

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## 🧠 What You Can Do with Project Gutenberg Data

Project Gutenberg is a goldmine of free eBooks in the public domain. You can use it for many NLP projects like:

| Task | Description | Model Type |
|—————————–|————————————————-|———————-|
| 📖 Text Generation | Generate Shakespeare-like or Dickens-like text | Language Modeling |
| 🧾 Text Classification | Classify books by author or genre | Classification |
| 🧹 Summarization | Summarize chapters or whole books | Sequence-to-sequence |
| 👥 Named Entity Recognition | Extract people, places, events | Sequence tagging |
| 🧠 Sentiment Analysis | Apply polarity scoring on sentences | Classification |

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## 📦 Step-by-Step: Use Project Gutenberg for NLP

### **Step 1: Install gutenberg or use requests for raw text**

bash
pip install gutenberg

But the gutenberg package has limitations. I suggest using the **raw text** from [https://www.gutenberg.org](https://www.gutenberg.org) instead.

Here’s how to fetch a book:

python
import requests

url = “https://www.gutenberg.org/files/1342/1342-0.txt” # Pride and Prejudice
response = requests.get(url)

text = response.text
print(text[:1000]) # Preview first 1000 characters

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### **Step 2: Clean the Text**

Books come with headers/footers. Clean them like this:

python
def clean_gutenberg_text(text):
start = text.find("*** START OF THIS PROJECT GUTENBERG EBOOK")
end = text.find("*** END OF THIS PROJECT GUTENBERG EBOOK")
return text[start:end]

cleaned_text = clean_gutenberg_text(text)

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### **Step 3: Tokenize and Preprocess**

Use nltk or spaCy:

bash
pip install nltk

python
import nltk
from nltk.tokenize import word_tokenize
nltk.download('punkt')

tokens = word_tokenize(cleaned_text.lower())
print(tokens[:20])

You can also remove stopwords, punctuation, etc.

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### **Step 4: Choose a Project Idea**

Here are 3 practical beginner-friendly projects with Gutenberg data:

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#### ✅ **1. Word Prediction Model**
Use n-grams to predict the next word.

python
from nltk import bigrams, FreqDist
import random

bi_grams = list(bigrams(tokens))
freq = FreqDist(bi_grams)

def predict_next_word(word):
candidates = [(a, b) for (a, b) in freq if a == word]
if not candidates:
return None
return max(candidates, key=lambda x: freq[x])[1]

print(predict_next_word(“elizabeth”))

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#### ✅ **2. Text Generation (Character-Level)**
Use an LSTM in Keras for a character-based language model (like GPT-mini!).

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#### ✅ **3. Author Classification**
Download 3-4 books each from 3 authors. Train a classifier (Naive Bayes or TF-IDF + SVM) to predict the author of a text excerpt.

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## 🗃 Where to Get More Books
Use a script to download multiple books from Gutenberg:

python
book_ids = [1342, 1661, 2701] # Add more IDs
books =

for book_id in book_ids:
url = f”https://www.gutenberg.org/files/book_id/book_id-0.txt”
text = requests.get(url).text
books[book_id] = clean_gutenberg_text(text)

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## 🚀 Want to Train a Language Model?
If you want to go further and train a **Transformer (like GPT-2)** on Gutenberg data, we can walk through that using Hugging Face’s transformers library and prepare your dataset accordingly.

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## 📘 Final Tip
Once you’ve built your first NLP project, even something small:
– Push it to GitHub
– Include a README explaining the model and the dataset
– Show some visualizations or outputs

That *is* your portfolio.

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