pydot and graphviz error: Couldn't import dot_parser, loading of dot files will not be possible
When I run a very simple code with pydot
import pydot graph = pydot.Dot(graph_type='graph') for i in range(3): edge = pydot.Edge("king", "lord%d" % i) graph.add_edge(edge) vassal_num = 0 for i in range(3): for j in range(2): edge = pydot.Edge("lord%d" % i, "vassal%d" % vassal_num) graph.add_edge(edge) vassal_num += 1 graph.write_png('example1_graph.png')
It prints me the error message:
Couldn't import dot_parser, loading of dot files will not be possible.
I'm using python 2.7.3
pydot >= 1.1:
Answer applicable to
pydot <= 1.0.28:
For anyone else who comes across this, it is due to the changes in pyparsing from 1.x to the 2.x release. To install pydot using pip, first install the older version of pyparsing:
pip install pyparsing==1.5.7 pip install pydot==1.0.28
If you did not install
pip, but instead used
setup.py, then have a look at this solution to uninstall the package. Thanks @qtips.