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The AstToolBox allows a developer to start from a python source file and see how a series of ast.NodeTransformers change it, and how a CodeGenerator will render the AST at any given point.

Files and transforms can be reloaded at any time which facilitates development. If a tree does not look right after some transformation, the transform can be edited and reloaded and reapplied.

This tool was derived from AstViewer

• Command line example:

  %> ast_tool_box myprog.py

• Examples to use from within Python:

  `python >>> from astviewer import view >>> view(file_name='myprog.py', width=800, height=600) >>> view(source_code = 'a + 3', mode='eval') `

#### Further links:

The `Green Tree Snakes documentation on ASTs<http://greentreesnakes.readthedocs.org/>`_ is available for those who find the `Python ast module documentation<http://docs.python.org/3/library/ast>`_ too brief.

1. Install PySide: http://qt-project.org/wiki/Category:LanguageBindings::PySide

2. Run the installer:

   %> python setup.py install