You can create both directed and non directed graphs from Python.
Golden Software, LLC.
Create customized 2D and 3D graphs using your data.
Python Software Foundation
Matplotlib is a Python plotting package for publication quality 2D graphics.
Great audio recording tool to grab any stream coming through your sound card.
An extension to Python library using a set of mathematical functions.
Gnuplot.py is a Python package that interfaces to gnuplot.
Silk Scientific, Inc.
The UN-SCAN-IT Graph Digitizer converts graph images to their underlying data.
The minimal 1-regular matchstick graph is a single graph edge.
Mark Hammond (et al)
Python pywin32-210 is a set of Python extensions for Windows.
Need For Eat - Python Return. Python Tournament on Your Desktop!
The Python Computer Graphics Kit is a collection of Python modules.
Stackless Python is an enhanced version of the Python programming language.
OpenOPC for Python is an easy-to-use OPC library for use with the Python.
PyDev is a Python IDE for Eclipse, which may be used in Python development.
HDF5 for Python is a Python interface to the HDF5 library.
Pyscard is a python module adding smart cards support to python.