python_parser.py 文件源码

def parse(self):
        """
        The main functionality. It parses a tree from :py:data:`self.path_or_stream`
        and uses :py:data:`ast.NodeVisitor` to iterate over the tree.

        :returns: self
        """
        self.stream.seek(0)
        try:
            with closing(self.stream) as stream:
                tree = ast.parse(stream.read())
        except (SyntaxError,):
            raise ParserException('File {file_} is not a python file'.format(
                file_=self.stream.name
            ))
        else:
            self.visit(tree)
        return self