def code_cell()

in utils/convert_doc_to_notebooks.py [0:0]


def code_cell(code, output=None):
    """ Create a code cell with `code` and optionally, `output`."""
    if output is None or len(output) == 0:
        outputs = []
    else:
        outputs = [nbformat.notebooknode.NotebookNode({
            'data': {'text/plain': output},
            'execution_count': None,
            'metadata': {},
            'output_type': 'execute_result'
        })]
    return nbformat.notebooknode.NotebookNode(
        {'cell_type': 'code', 
         'execution_count': None,
         'source': code, 
         'metadata': {},
         'outputs': outputs})