class_docstr: For PRQL source code.
  
  .. versionadded:: 2.17
  
  grammar: https://github.com/PRQL/prql/tree/main/grammars
class_docstr_tok: ["For","PRQL","source","code",".","..","versionadded",":",":","2.17","grammar",":","https",":","\/\/github.com\/PRQL\/prql\/tree\/main\/grammars"]
code: def fstring_rules(ttype):
      return [
          (r"\}", String.Interpol),
          (r"\{", String.Interpol, "expr-inside-fstring"),
          (r'[^\\\'"{}\n]+', ttype),
          (r'[\'"\\]', ttype),
      ]
  
imports: from pygments.lexer import RegexLexer, combined, words, include, bygroups
  from pygments.token import Comment, Literal, Keyword, Name, Number, Operator, Punctuation, String, Text, Whitespace
label_desc: Use image node_id 2 for calling the PrqlLexer obj's underlying member method code with example usage: obj.fstring_rules(ttype) and returns: list