Make html中有语法错误的示例代码没有python模式的高亮

[hlscxq]

新手学习，试着自己make 一下html，有提示 WARNING.例如 \source\c01\p01_unpack_sequence_into_separate_variables.rst:48: WARNING: Could not lex literal_block as "python". Highlighting skipped. \source\c01\p05_implement_a_priority_queue.rst:79: WARNING: Could not lex literal_block as "python". Highlighting skipped. \source\c01\p05_implement_a_priority_queue.rst:92: WARNING: Could not lex literal_block as "python". Highlighting skipped. 看了下大神的生成文档示例也是一样，这种python语法错误的示例代码部分没有按python样式高亮显示，求助下能否有解决方案？

[yidao620c]

我也没找到好的解决方案，希望其他人看到这个issue的人帮忙解决一下。