I wish to contribute to an open-source Python lexer. I’m looking at the official Python3 grammar specification: https://docs.python.org/3/reference/grammar.html However, there are a lot of references to ‘NAME’. For example: I know it’s something similar to an identifier but where can I…
Tag: grammar
How can I make this grammar unambiguous?
I’m trying to write a parser for a simple language: When I run it, I get the following error: I understand that this is happening because, if we imagine that the parser was built without an error, and then wrote parser.parse(‘foo’), both arithmetic_expr and boolean_expr would be “corre…
How to check whether a sentence is correct (simple grammar check in Python)?
How to check whether a sentence is valid in Python? Examples: Answer Check out NLTK. They have support for grammars that you can use to parse your sentence. You can define a grammar, or use one that is provided, along with a context-free parser. If the sentence parses, then it has valid grammar; if not, then …