Ud* 8dZddlmZmZdZd dZdZdZdZy) z8Code for converting notebooks to and from the v2 format.)nbformatnbformat_minorct|tr(|jD]\}}t|||<|St|tr#t |D]\}}t|||<|St|t r|jd}|S)z^There should be no bytes objects in a notebook v2 stores png/jpeg as b64 ascii bytes ascii) isinstancedictitems_unbyteslist enumeratebytesdecode)objkvis 5/usr/lib/python3/dist-packages/nbformat/v3/convert.pyr r s #tIIK !DAqa[CF ! J C cN !DAqa[CF ! J C jj! Jc|dk(rPt|_t|_d|_t|}|dD]}|dD]}|j di |S|dk(r|tk7r||_t|_|Sd|z}t |)aPConvert a notebook to v3. Parameters ---------- nb : NotebookNode The Python representation of the notebook to convert. from_version : int The original version of the notebook to convert. from_minor : int The original minor version of the notebook to convert (only relevant for v >= 3).  worksheetscellsmetadatazZCannot convert a notebook directly from v%s to v3. Try using the nbformat.convert module.)rr orig_nbformatr setdefaultorig_nbformat_minor ValueError)nb from_version from_minorwscellmsgs rupgrader%sq * b\\" 0B7  0 B/ 0 0    '%/B "*  57C D orcjd|_|jdd}d|zdz|jz|_y)z-turn heading cell into corresponding markdownmarkdownlevelr# N) cell_typepopsource)r#r(s r heading_to_mdr.>s2DN HHWa E+#dkk1DKrcd|_y)zlet raw passthrough as markdownr'N)r+)r#s r raw_to_mdr0Es DNrc|jdk7r|Sd|_|jD]I}|jD]8}|jdk(r t ||jdk(s.t |:K|S)zConvert a v3 notebook to v2. Parameters ---------- nb : NotebookNode The Python representation of the notebook to convert. rrheadingraw)rrrr+r.r0)rr"r#s r downgrader4Jsp {{a BKmm HH D~~*d#5($   IrN)r) __doc__nbbaserrr r%r.r0r4rrr9s'> -"!H2 r