U ku f; @s@dZddlmZddlmZddlmZddlmZddZ d S) z.API for converting notebooks between versions.) annotations)versions) get_version)ValidationErrorc Cst|\}}||kr|S|tkr||kr<|d}t|j}n|d}t|j}z0||}|dd|kr|d||f}t|WnBtk r}z$d|d|d|}t|dW5d}~XYnXt||Std|dS) aConvert a notebook node object to a specific version. Assumes that all the versions starting from 1 to the latest major X are implemented. In other words, there should never be a case where v1 v2 v3 v5 exist without a v4. Also assumes that all conversions can be made in one step increments between major versions and ignores minor revisions. Parameters ---------- nb : NotebookNode to_version : int Major revision to convert the notebook to. Can either be an upgrade or a downgrade. Raises ------ ValueError Notebook failed to convert. ValueError The version specified is invalid or doesn't exist. ValidationError Conversion failed due to missing expected attributes. rZnbformatz+Failed to convert notebook from v%d to v%d.z-Notebook could not be converted from version z to version z because it's missing a key: NzACannot convert notebook to v%d because that version doesn't exist) rrupgradeZ downgradeget ValueErrorAttributeErrorrconvert) nbZ to_versionversionZ version_minorZ step_versionZconvert_functionZ convertedmsger6/tmp/pip-unpacked-wheel-zj9qk9v2/nbformat/converter.pyr s*      r N) __doc__ __future__rrreaderrZ validatorrr rrrrs