a.py

import nltk
import os

# Define the path where 'punkt' will be saved
punkt_path = os.path.join('nltk_data', 'tokenizers', 'punkt')

# Create directories if they don't exist
os.makedirs(punkt_path, exist_ok=True)

# Download 'punkt' to the specified directory
nltk.download('punkt', download_dir='nltk_data')