B '=[@s6dZddlmZmZmZmZmZdddZddZdS) zhCode for converting notebooks to and from the v2 format. Authors: * Brian Granger * Jonathan Frederic ) new_code_cell new_text_cell new_worksheet new_notebook new_outputcCs|dkrt}t}xZ|jD]P}|jdkrDt|d|dd}n|jdkr`td|dd}|j|qW|j||St d|d S) zConvert a notebook to the v2 format. Parameters ---------- nb : NotebookNode The Python representation of the notebook to convert. from_version : int The version of the notebook to convert from. rcode prompt_number)inputrtextZmarkdown)sourcez(Cannot convert a notebook from v%s to v2N) rrZcellsZ cell_typergetrappendZ worksheets ValueError)nbZ from_versionZnewnbZwsZcellZnewcellr2lib/python3.7/site-packages/nbformat/v2/convert.pyupgrades     rcCs tddS)zConvert a v2 notebook to v1. Parameters ---------- nb : NotebookNode The Python representation of the notebook to convert. z2Downgrade from notebook v2 to v1 is not supported.N) Exception)rrrr downgrade5srN)r) __doc__Znbbaserrrrrrrrrrrs