
    e                         d Z ddZdS )z"Convert notebook to the v1 format.Nc                 $    d}t          |          )zUpgrade a notebook.z$Cannot convert to v1 notebook format)
ValueError)nborig_versionmsgs      3lib/python3.11/site-packages/nbformat/v1/convert.pyupgrader      s    
0C
S//    )N)__doc__r    r	   r   <module>r      s)    ( (     r	   