👉 A parser is a computer program that takes input in a formal language and generates an output in a second, typically more complex, language called the desired output. The input can be text, numbers, symbols, or even other programs written by humans. Parsers are crucial for natural language processing tasks such as parsing strings into grammatical structures (e.g., noun phrases, verb phrases), identifying parts of speech, and understanding syntax rules in programming languages. They often work on a very large scale to handle