~3.5 GB to 8.5 GB+. While the initial download of the compressed "all" collection is smaller, it can expand to over 8 GB once unzipped on your disk. Detailed Package Breakdown
~100 MB. This includes around 30 compressed files used for the examples in the official NLTK book . nltk download size
The NLTK library package you install via pip is only about . However, NLTK is unique because it requires separate data files—stored in a folder called nltk_data —to perform tasks like tokenization, part-of-speech tagging, or lemmatization. Estimated Download Sizes for Data Collections This includes around 30 compressed files used for
You can download data in "collections" using nltk.download() . Here is the typical disk space required for each: Estimated Download Sizes for Data Collections You can
When working with the Natural Language Toolkit (NLTK) in Python, the depends entirely on which data packages you choose to install. The core library itself is lightweight, but the "data" (corpora, models, and lexicons) can vary from a few megabytes to several gigabytes. NLTK Core Library vs. Data Size
If you are worried about disk space, you should only download the specific resources your project requires. Package ID Estimated Size (Compressed) punkt Sentence tokenization wordnet Lexical database for lemmatization stopwords Lists of common words to ignore brown Large corpus of American English maxent_ne_chunker Named entity recognition model Where is the Data Stored?
