code: def extract_code(lines, node, lstrip="", ljoin="\n", strip=""):
      
      first_line, first_col = node.first_line - 1, node.first_col
      last_line, last_col = node.last_line - 1, node.last_col
      if first_line == last_line:
          return lines[first_line][first_col:last_col].strip(strip)
  
      result = []
      # Add first line
      result.append(lines[first_line][first_col:].strip(lstrip))
      # Add middle lines
      if first_line + 1 != last_line:
          for line in range(first_line + 1, last_line):
              result.append(lines[line].strip(lstrip))
      # Add last line
      result.append(lines[last_line][:last_col].strip(lstrip))
      return ljoin.join(result).strip(strip)
docs: Get corresponding text in the code
  
  
      Arguments:
      lines -- code splitted by linebreak
      node -- PyPosAST enhanced node
  
  
      Keyword Arguments:
      lstrip -- During extraction, strip lines with this arg (default="")
      ljoin -- During extraction, join lines with this arg (default="\n")
      strip -- After extraction, strip all code with this arg (default="")