Additional properties are not allowed ('prompt_number' was unexpected) Failed validating 'additionalProperties' in code_cell: On instance['cells'][5]: {'cell_type': 'code', 'execution_count': 9, 'metadata': {'collapsed': False}, 'outputs': ['...0 outputs...'], 'prompt_number': '', 'source': 'dir() # Compare IPython Notebook with the standard interpreter ' 'e...'}
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