Understanding the meaning, tone, context, and intent of what people write may provide organizations with vital information about their current and future customers, as well as competitors. This is precisely what sentiment analysis provides. It is still a developing field, but it is an interesting one. In simple words, sentiment analysis predicts whether the provided input is positive, neutral, or negative. The Natural Language Toolkit, or NLTK, is one of the premier libraries for developing Natural Language Processing (NLP) models, making it an excellent choice for sentiment analysis.