PySonar2 is a type inferencer and indexer for Python, which does sophisticated interprocedural analysis to infer types. It is one of the underlying technologies that power the code search site Sourcegraph.
To understand its properties, please refer to my blog posts:
- http://yinwang0.wordpress.com/2010/09/12/pysonar
- http://yinwang0.wordpress.com/2013/06/21/pysonar-slides
mvn package
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Python 2.7.x is recommended (Python <= 2.5 does not work, Python 2.6 works for some people but not all)
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Python 3.x if you have Python3 files
PySonar2 uses CPython interpreter to parse Python code, so please make sure you
have python or python3 installed and pointed to by the PATH environment
variable. If you have them in different names, please make symbol links.
PYTHONPATH environment variable is used for locating the Python standard
libraries. It is important to point it to the correct Python library, for
example
export PYTHONPATH=/usr/lib/python2.7
If this is not set up correctly, you may find suboptimal results.
PySonar2 is mainly designed as a library for Python IDEs and other developer tools, so its interface may not be as appealing as an end-user tool, but for your understanding of the library's capabilities, a reasonably nice demo program has been built.
Now you can build a simple "code-browser" of the Python 2.7 standard library with the following command line:
java -jar target/pysonar-2.0-SNAPSHOT.jar /usr/lib/python2.7 ./html
This will take a few minutes. You should find some interactive HTML files inside the html directory after this process.
PySonar2 doesn't need much memory to do analysis. 1.5Gb is probably enough for analyzing a medium sized project such as Python's standard library or Django. But for generating the HTML files, you may need quite some memory (~2.5Gb for Python 2.7 standard lib). This is due to the highlighting code is putting all code and their HTML tags into the memory.
PySonar - a type inferencer and indexer for Python
Copyright (c) 2013-2014 Yin Wang
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.