def _get_pygments_lexer(self, lexer_name):
        try:
            from pygments import lexers, util
        except __HOLE__:
            return None
        try:
            return lexers.get_lexer_by_name(lexer_name)
        except util.ClassNotFound:
            return None
dataset/ETHPy150Open CollabQ/CollabQ/vendor/markdown/markdown2.py/Markdown._get_pygments_lexer