parameters: (src, lang)
return_statement: return '```'+lang+'\n'+src.rstrip()+'\n'+'```\n'
docstring: Return a markdown code block
  
      E.g.
      ```python
      import mxnet
      ````
docstring_summary: Return a markdown code block
docstring_tokens: Return a markdown code block
function: def _get_mk_code_block(src, lang):
      """Return a markdown code block
  
      E.g.
      ```python
      import mxnet
      ````
      """
      if lang is None:
          lang = ''
      return '```'+lang+'\n'+src.rstrip()+'\n'+'```\n'
function_tokens: def _get_mk_code_block ( src , lang ) : if lang is None : lang = '' return '```' + lang + '\n' + src . rstrip ( ) + '\n' + '```\n'