astviewer

Graphical User Interface for viewing Python Abstract Syntax Trees.

Installation:

First install PyQt or PySide. Either one is fine, AstViewer automatically detects which Qt bindings are installed. If both bindings are installed it prefers PyQt over PySide (You can force AstViewer to use a certain binding by setting the QT_API environment variable to pyqt5, pyqt4, pyside or pyside2.)

If you are using the Anaconda Python distribution it is recommended to install PyQt as follows:

%> conda install pyqt

or, for PySide use

%> conda install pyside2

If you are not using the Anaconda Python distro, you can install the dependencies with Pip as follows:

%> pip3 install pyqt5

or

%> pip install pyside2

There is no conda recipe for the AstViewer, but you can use Pip to install it even if you use Anaconda. To install it type:

%> pip install astviewer

Usage:

Command line example:

%> pyastviewer myprog.py

Examples to use from within Python:

	>>> from astviewer.main import view
	>>> view(file_name='myprog.py')
	>>> view(source_code = 'a + 3', mode='eval')

Further links:

The Green Tree Snakes documentation on ASTs is available for those who find the Python ast module documentation too brief.