Changes

The Python export functionality will be implemented in pure Python, drawing on the internal block code interpreter of Turtle Blocks to convert the blocks to a representation of the program flow. I will then use the <code>ast</code> module<ref>http://docs.python.org/2.6/library/ast.html</ref> to build the Python syntax tree from this representation. In order to serialize the syntax tree to a string, which can then be written to a file, I plan to use either the <code>codegen</code> module<ref>http://dev.pocoo.org/hg/sandbox/file/b2aea937f5bb/ast/codegen.py</ref><ref>https://gist.github.com/mattbasta/791312</ref> or the <code>unparse</code> module.<ref>http://svn.python.org/view/python/trunk/Demo/parser/unparse.py?view=markup</ref>

The Python export functionality will be implemented in pure Python, drawing on the internal block code interpreter of Turtle Blocks to convert the blocks to a representation of the program flow. I will then use the <code>ast</code> module<ref>http://docs.python.org/2.6/library/ast.html</ref> to build the Python syntax tree from this representation. In order to serialize the syntax tree to a string, which can then be written to a file, I plan to use either the <code>codegen</code> module<ref>http://dev.pocoo.org/hg/sandbox/file/b2aea937f5bb/ast/codegen.py</ref><ref>https://gist.github.com/mattbasta/791312</ref> or the <code>unparse</code> module.<ref>http://svn.python.org/view/python/trunk/Demo/parser/unparse.py?view=markup</ref>

The exported Python code will need to import a few classes from Turtle Blocks to set up a window etc. I will isolate these classes from the Turtle Blocks code, so it can easily be imported into the generated code.

The exported Python code will need to import a few classes from Turtle Blocks to set up a window etc. I will isolate these classes from the Turtle Blocks code, so it can easily be imported into the generated code.

** September 9 – September 15 (1 week)

** September 9 – September 15 (1 week)

*** Multiple turtles and custom turtle shells from the 'Extra options' palette<ref name="requires-add-imports" group="note" />

*** Multiple turtles and custom turtle shells from the 'Extra options' palette<ref name="requires-add-imports" group="note" />

*** Display management (hide/ show blocks, toggle full screen) from the 'Presentation templates' palette, and printing and loading blocks and palettes from the 'Extra options' palette:<ref name="requires-add-imports" group="note" /> These are very specific to Turtle Blocks. We need further discussion how this should look in the output of the exported Python code.<!-- TODO report results of discussion -->

*** Display management (hide/ show blocks, toggle full screen) from the 'Presentation templates' palette, and printing and loading blocks and palettes from the 'Extra options' palette:<ref name="requires-add-imports" group="note" /><!-- These are very specific to Turtle Blocks. We need further discussion how this should look in the output of the exported Python code. --><!-- TODO report results of discussion -->

* September 16 – September 23 (1 week): Test exporting different kinds of blocks in combination. Fix the last bugs. Clean up.

* September 16 – September 23 (1 week): Test exporting different kinds of blocks in combination. Fix the last bugs. Clean up.