code: def _getDocstringLineno(self, node_type, node):
          
          docstringStriped = node.as_string().strip()
          linenoDocstring = (node.lineno + docstringStriped
                             .count("\n", 0, docstringStriped.index('"""')))
          if node_type == "module":
              # Module starts from line 0.
              linenoDocstring += 1
          return linenoDocstring
docs: Get line number of the docstring.
  
          @param node_type: type of node_type
          @param node: node of currently checking
          @return: line number